diff --git a/README.md b/README.md
index 0f196bf5..1b728380 100644
--- a/README.md
+++ b/README.md
@@ -99,24 +99,6 @@ This extensions adds the following [Promotion rules](https://guides.solidus.io/d
 
 You can find the API documentation [here](https://stoplight.io/p/docs/gh/solidusio-contrib/solidus_subscriptions?group=master).
 
-### Churn Buster integration
-
-This extension optionally integrates with [Churn Buster](https://churnbuster.io) for failed payment
-recovery. In order to enable the integration, simply add your Churn Buster credentials to your
-configuration:
-
-```ruby
-SolidusSubscriptions.configure do |config|
-  # ...
-
-  config.churn_buster_account_id = 'YOUR_CHURN_BUSTER_ACCOUNT_ID'
-  config.churn_buster_api_key = 'YOUR_CHURN_BUSTER_API_KEY'
-end
-```
-
-The extension will take care of reporting successful/failed payments and payment method changes
-to Churn Buster.
-
 ### Failed installments retries
 
 The extension generates an installment for each subscription cycle, however some of them can fail
diff --git a/app/decorators/models/solidus_subscriptions/spree/wallet_payment_source/report_default_change_to_subscriptions.rb b/app/decorators/models/solidus_subscriptions/spree/wallet_payment_source/report_default_change_to_subscriptions.rb
deleted file mode 100644
index 6ee754e7..00000000
--- a/app/decorators/models/solidus_subscriptions/spree/wallet_payment_source/report_default_change_to_subscriptions.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module Spree
-    module WalletPaymentSource
-      module ReportDefaultChangeToSubscriptions
-        def self.prepended(base)
-          base.after_save :report_default_change_to_subscriptions
-        end
-
-        private
-
-        def report_default_change_to_subscriptions
-          return if !previous_changes.key?('default') || !default?
-
-          user.subscriptions.with_default_payment_source.each do |subscription|
-            ::Spree::Event.fire(
-              'solidus_subscriptions.subscription_payment_method_changed',
-              subscription: subscription,
-            )
-          end
-        end
-      end
-    end
-  end
-end
-
-Spree::WalletPaymentSource.prepend(SolidusSubscriptions::Spree::WalletPaymentSource::ReportDefaultChangeToSubscriptions)
diff --git a/app/models/solidus_subscriptions/subscription.rb b/app/models/solidus_subscriptions/subscription.rb
index 7e98f827..76f84cc9 100644
--- a/app/models/solidus_subscriptions/subscription.rb
+++ b/app/models/solidus_subscriptions/subscription.rb
@@ -79,10 +79,6 @@ class Subscription < ApplicationRecord
       joins(:installments).merge(Installment.unfulfilled)
     end)
 
-    scope :with_default_payment_source, (lambda do
-      where(payment_method: nil, payment_source: nil)
-    end)
-
     def self.ransackable_scopes(_auth_object = nil)
       [:in_processing_state]
     end
@@ -107,7 +103,7 @@ def self.processing_states
     state_machine :state, initial: :active do
       event :cancel do
         transition [:active, :pending_cancellation] => :canceled,
-                   if: ->(subscription) { subscription.can_be_canceled? }
+          if: ->(subscription) { subscription.can_be_canceled? }
 
         transition active: :pending_cancellation
       end
@@ -122,7 +118,7 @@ def self.processing_states
 
       event :deactivate do
         transition active: :inactive,
-                   if: ->(subscription) { subscription.can_be_deactivated? }
+          if: ->(subscription) { subscription.can_be_deactivated? }
       end
 
       event :activate do
@@ -380,13 +376,6 @@ def emit_events_for_update
           subscription: self,
         )
       end
-
-      if previous_changes.key?('payment_source_id') || previous_changes.key?('payment_source_type') || previous_changes.key?('payment_method_id')
-        ::Spree::Event.fire(
-          'solidus_subscriptions.subscription_payment_method_changed',
-          subscription: self,
-        )
-      end
     end
   end
 end
diff --git a/app/subscribers/solidus_subscriptions/churn_buster_subscriber.rb b/app/subscribers/solidus_subscriptions/churn_buster_subscriber.rb
deleted file mode 100644
index 34540038..00000000
--- a/app/subscribers/solidus_subscriptions/churn_buster_subscriber.rb
+++ /dev/null
@@ -1,39 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module ChurnBusterSubscriber
-    include ::Spree::Event::Subscriber
-
-    event_action :report_subscription_cancellation, event_name: 'solidus_subscriptions.subscription_canceled'
-    event_action :report_subscription_ending, event_name: 'solidus_subscriptions.subscription_ended'
-    event_action :report_payment_success, event_name: 'solidus_subscriptions.installment_succeeded'
-    event_action :report_payment_failure, event_name: 'solidus_subscriptions.installment_failed_payment'
-    event_action :report_payment_method_change, event_name: 'solidus_subscriptions.subscription_payment_method_changed'
-
-    def report_subscription_cancellation(event)
-      churn_buster&.report_subscription_cancellation(event.payload.fetch(:subscription))
-    end
-
-    def report_subscription_ending(event)
-      churn_buster&.report_subscription_cancellation(event.payload.fetch(:subscription))
-    end
-
-    def report_payment_success(event)
-      churn_buster&.report_successful_payment(event.payload.fetch(:order))
-    end
-
-    def report_payment_failure(event)
-      churn_buster&.report_failed_payment(event.payload.fetch(:order))
-    end
-
-    def report_payment_method_change(event)
-      churn_buster&.report_payment_method_change(event.payload.fetch(:subscription))
-    end
-
-    private
-
-    def churn_buster
-      SolidusSubscriptions.churn_buster
-    end
-  end
-end
diff --git a/config/initializers/subscribers.rb b/config/initializers/subscribers.rb
index 486fe72b..fe4c88be 100644
--- a/config/initializers/subscribers.rb
+++ b/config/initializers/subscribers.rb
@@ -1,9 +1,5 @@
 # frozen_string_literal: true
 
-if Spree.solidus_gem_version < Gem::Version.new('2.11.0')
-  require SolidusSubscriptions::Engine.root.join('app/subscribers/solidus_subscriptions/event_storage_subscriber')
-  require SolidusSubscriptions::Engine.root.join('app/subscribers/solidus_subscriptions/churn_buster_subscriber')
-
-  SolidusSubscriptions::ChurnBusterSubscriber.subscribe!
-  SolidusSubscriptions::EventStorageSubscriber.subscribe!
+Spree.config do |config|
+  config.events.subscribers << 'SolidusSubscriptions::EventStorageSubscriber'
 end
diff --git a/lib/solidus_subscriptions.rb b/lib/solidus_subscriptions.rb
index 9d6457f0..f2ec3b07 100644
--- a/lib/solidus_subscriptions.rb
+++ b/lib/solidus_subscriptions.rb
@@ -12,12 +12,6 @@
 require 'solidus_subscriptions/permission_sets/subscription_management'
 require 'solidus_subscriptions/version'
 require 'solidus_subscriptions/engine'
-require 'solidus_subscriptions/churn_buster/client'
-require 'solidus_subscriptions/churn_buster/serializer'
-require 'solidus_subscriptions/churn_buster/subscription_customer_serializer'
-require 'solidus_subscriptions/churn_buster/subscription_payment_method_serializer'
-require 'solidus_subscriptions/churn_buster/subscription_serializer'
-require 'solidus_subscriptions/churn_buster/order_serializer'
 require 'solidus_subscriptions/checkout'
 require 'solidus_subscriptions/subscription_generator'
 require 'solidus_subscriptions/subscription_line_item_builder'
@@ -37,14 +31,5 @@ def configure
     def configuration
       @configuration ||= Configuration.new
     end
-
-    def churn_buster
-      return unless configuration.churn_buster?
-
-      @churn_buster ||= ChurnBuster::Client.new(
-        account_id: SolidusSubscriptions.configuration.churn_buster_account_id,
-        api_key: SolidusSubscriptions.configuration.churn_buster_api_key,
-      )
-    end
   end
 end
diff --git a/lib/solidus_subscriptions/churn_buster/client.rb b/lib/solidus_subscriptions/churn_buster/client.rb
deleted file mode 100644
index 915bb409..00000000
--- a/lib/solidus_subscriptions/churn_buster/client.rb
+++ /dev/null
@@ -1,48 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module ChurnBuster
-    class Client
-      BASE_API_URL = 'https://api.churnbuster.io/v1'
-
-      attr_reader :account_id, :api_key
-
-      def initialize(account_id:, api_key:)
-        @account_id = account_id
-        @api_key = api_key
-      end
-
-      def report_failed_payment(order)
-        post('/failed_payments', OrderSerializer.serialize(order))
-      end
-
-      def report_successful_payment(order)
-        post('/successful_payments', OrderSerializer.serialize(order))
-      end
-
-      def report_subscription_cancellation(subscription)
-        post('/cancellations', SubscriptionSerializer.serialize(subscription))
-      end
-
-      def report_payment_method_change(subscription)
-        post('/payment_methods', SubscriptionPaymentMethodSerializer.serialize(subscription))
-      end
-
-      private
-
-      def post(path, body)
-        HTTParty.post(
-          "#{BASE_API_URL}#{path}",
-          body: body.to_json,
-          headers: {
-            'Content-Type' => 'application/json',
-          },
-          basic_auth: {
-            username: account_id,
-            password: api_key,
-          },
-        )
-      end
-    end
-  end
-end
diff --git a/lib/solidus_subscriptions/churn_buster/order_serializer.rb b/lib/solidus_subscriptions/churn_buster/order_serializer.rb
deleted file mode 100644
index 5bc5dee7..00000000
--- a/lib/solidus_subscriptions/churn_buster/order_serializer.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module ChurnBuster
-    class OrderSerializer < Serializer
-      def to_h
-        {
-          payment: {
-            source: 'in_house',
-            source_id: object.number,
-            amount_in_cents: object.display_total.cents,
-            currency: object.currency,
-          },
-          customer: SubscriptionCustomerSerializer.serialize(object.subscription),
-        }
-      end
-    end
-  end
-end
diff --git a/lib/solidus_subscriptions/churn_buster/serializer.rb b/lib/solidus_subscriptions/churn_buster/serializer.rb
deleted file mode 100644
index d8b83bba..00000000
--- a/lib/solidus_subscriptions/churn_buster/serializer.rb
+++ /dev/null
@@ -1,23 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module ChurnBuster
-    class Serializer
-      attr_reader :object
-
-      class << self
-        def serialize(object)
-          new(object).to_h
-        end
-      end
-
-      def initialize(object)
-        @object = object
-      end
-
-      def to_h
-        raise NotImplementedError
-      end
-    end
-  end
-end
diff --git a/lib/solidus_subscriptions/churn_buster/subscription_customer_serializer.rb b/lib/solidus_subscriptions/churn_buster/subscription_customer_serializer.rb
deleted file mode 100644
index cd17af3c..00000000
--- a/lib/solidus_subscriptions/churn_buster/subscription_customer_serializer.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module ChurnBuster
-    class SubscriptionCustomerSerializer < Serializer
-      def to_h
-        {
-          source: 'in_house',
-          source_id: object.id,
-          email: object.user.email,
-          properties: {
-            name: name
-          },
-        }
-      end
-
-      private
-
-      def name
-        if ::Spree.solidus_gem_version < Gem::Version.new('2.11.0')
-          "#{object.shipping_address_to_use.first_name} #{object.shipping_address_to_use.last_name}"
-        else
-          object.shipping_address_to_use.name
-        end
-      end
-    end
-  end
-end
diff --git a/lib/solidus_subscriptions/churn_buster/subscription_payment_method_serializer.rb b/lib/solidus_subscriptions/churn_buster/subscription_payment_method_serializer.rb
deleted file mode 100644
index 984059da..00000000
--- a/lib/solidus_subscriptions/churn_buster/subscription_payment_method_serializer.rb
+++ /dev/null
@@ -1,37 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module ChurnBuster
-    class SubscriptionPaymentMethodSerializer < Serializer
-      def to_h
-        {
-          payment_method: {
-            source: 'in_house',
-            source_id: [
-              object.payment_method_to_use&.id,
-              object.payment_source_to_use&.id
-            ].compact.join('-'),
-            type: 'card',
-            properties: payment_source_properties,
-          },
-          customer: SubscriptionCustomerSerializer.serialize(object),
-        }
-      end
-
-      private
-
-      def payment_source_properties
-        if object.payment_source.is_a?(::Spree::CreditCard)
-          {
-            brand: object.payment_source.cc_type,
-            last4: object.payment_source.last_digits,
-            exp_month: object.payment_source.month,
-            exp_year: object.payment_source.year,
-          }
-        else
-          {}
-        end
-      end
-    end
-  end
-end
diff --git a/lib/solidus_subscriptions/churn_buster/subscription_serializer.rb b/lib/solidus_subscriptions/churn_buster/subscription_serializer.rb
deleted file mode 100644
index 06c08d16..00000000
--- a/lib/solidus_subscriptions/churn_buster/subscription_serializer.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module ChurnBuster
-    class SubscriptionSerializer < Serializer
-      def to_h
-        {
-          subscription: {
-            source: 'in_house',
-            source_id: object.id
-          },
-          customer: SubscriptionCustomerSerializer.serialize(object),
-        }
-      end
-    end
-  end
-end
diff --git a/lib/solidus_subscriptions/configuration.rb b/lib/solidus_subscriptions/configuration.rb
index 9d6c3d2a..adcf41c8 100644
--- a/lib/solidus_subscriptions/configuration.rb
+++ b/lib/solidus_subscriptions/configuration.rb
@@ -3,8 +3,7 @@
 module SolidusSubscriptions
   class Configuration
     attr_accessor(
-      :maximum_total_skips, :maximum_reprocessing_time, :churn_buster_account_id,
-      :churn_buster_api_key, :clear_past_installments, :processing_error_handler
+      :maximum_total_skips, :maximum_reprocessing_time, :clear_past_installments, :processing_error_handler
     )
 
     attr_writer(
@@ -78,10 +77,6 @@ def subscribable_class
       @subscribable_class.constantize
     end
 
-    def churn_buster?
-      churn_buster_account_id.present? && churn_buster_api_key.present?
-    end
-
     def order_creator_class
       @order_creator_class ||= 'SolidusSubscriptions::OrderCreator'
       @order_creator_class.constantize
diff --git a/lib/solidus_subscriptions/dispatcher/payment_failed_dispatcher.rb b/lib/solidus_subscriptions/dispatcher/payment_failed_dispatcher.rb
index a56332ed..16e0b7bc 100644
--- a/lib/solidus_subscriptions/dispatcher/payment_failed_dispatcher.rb
+++ b/lib/solidus_subscriptions/dispatcher/payment_failed_dispatcher.rb
@@ -7,12 +7,6 @@ def dispatch
         order.touch(:completed_at)
         order.cancel
         installment.payment_failed!(order)
-
-        ::Spree::Event.fire(
-          'solidus_subscriptions.installment_failed_payment',
-          installment: installment,
-          order: order,
-        )
       end
     end
   end
diff --git a/lib/solidus_subscriptions/dispatcher/success_dispatcher.rb b/lib/solidus_subscriptions/dispatcher/success_dispatcher.rb
index 0ae71dc7..cf97e892 100644
--- a/lib/solidus_subscriptions/dispatcher/success_dispatcher.rb
+++ b/lib/solidus_subscriptions/dispatcher/success_dispatcher.rb
@@ -5,12 +5,6 @@ module Dispatcher
     class SuccessDispatcher < Base
       def dispatch
         installment.success!(order)
-
-        ::Spree::Event.fire(
-          'solidus_subscriptions.installment_succeeded',
-          installment: installment,
-          order: order,
-        )
       end
     end
   end
diff --git a/solidus_subscriptions.gemspec b/solidus_subscriptions.gemspec
index 5831cf18..4f38d050 100644
--- a/solidus_subscriptions.gemspec
+++ b/solidus_subscriptions.gemspec
@@ -40,8 +40,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'shoulda-matchers', '~> 4.4'
   spec.add_development_dependency 'solidus_dev_support', '~> 2.0'
   spec.add_development_dependency 'timecop'
-  spec.add_development_dependency 'vcr'
   spec.add_development_dependency 'versioncake'
-  spec.add_development_dependency 'webmock'
   spec.add_development_dependency 'yard'
 end
diff --git a/spec/fixtures/cassettes/churn_buster.yml b/spec/fixtures/cassettes/churn_buster.yml
deleted file mode 100644
index 0d3803a1..00000000
--- a/spec/fixtures/cassettes/churn_buster.yml
+++ /dev/null
@@ -1,229 +0,0 @@
----
-http_interactions:
-- request:
-    method: post
-    uri: https://api.churnbuster.io/v1/successful_payments
-    body:
-      encoding: UTF-8
-      string: '{"payment":{"source":"in_house","source_id":"R863897282","amount_in_cents":0,"currency":"USD"},"customer":{"source":"in_house","source_id":1,"email":"email2@example.com","properties":{"first_name":"John","last_name":"John"}}}'
-    headers:
-      Content-Type:
-      - application/json
-      Accept-Encoding:
-      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
-      Accept:
-      - "*/*"
-      User-Agent:
-      - Ruby
-  response:
-    status:
-      code: 200
-      message: OK
-    headers:
-      Server:
-      - Cowboy
-      Date:
-      - Thu, 01 Oct 2020 13:46:09 GMT
-      Connection:
-      - keep-alive
-      X-Frame-Options:
-      - SAMEORIGIN
-      X-Xss-Protection:
-      - 1; mode=block
-      X-Content-Type-Options:
-      - nosniff
-      X-Download-Options:
-      - noopen
-      X-Permitted-Cross-Domain-Policies:
-      - none
-      Referrer-Policy:
-      - strict-origin-when-cross-origin
-      Content-Type:
-      - application/json
-      Cache-Control:
-      - no-cache
-      X-Request-Id:
-      - a664eaa0-2735-4a88-990d-fb9c29766e00
-      X-Runtime:
-      - '0.070480'
-      Strict-Transport-Security:
-      - max-age=31536000; includeSubDomains
-      Transfer-Encoding:
-      - chunked
-      Via:
-      - 1.1 vegur
-    body:
-      encoding: UTF-8
-      string: ''
-  recorded_at: Thu, 01 Oct 2020 13:46:09 GMT
-- request:
-    method: post
-    uri: https://api.churnbuster.io/v1/failed_payments
-    body:
-      encoding: UTF-8
-      string: '{"payment":{"source":"in_house","source_id":"R276044153","amount_in_cents":0,"currency":"USD"},"customer":{"source":"in_house","source_id":1,"email":"email2@example.com","properties":{"first_name":"John","last_name":"John"}}}'
-    headers:
-      Content-Type:
-      - application/json
-      Accept-Encoding:
-      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
-      Accept:
-      - "*/*"
-      User-Agent:
-      - Ruby
-  response:
-    status:
-      code: 200
-      message: OK
-    headers:
-      Server:
-      - Cowboy
-      Date:
-      - Thu, 01 Oct 2020 14:24:32 GMT
-      Connection:
-      - keep-alive
-      X-Frame-Options:
-      - SAMEORIGIN
-      X-Xss-Protection:
-      - 1; mode=block
-      X-Content-Type-Options:
-      - nosniff
-      X-Download-Options:
-      - noopen
-      X-Permitted-Cross-Domain-Policies:
-      - none
-      Referrer-Policy:
-      - strict-origin-when-cross-origin
-      Content-Type:
-      - application/json
-      Cache-Control:
-      - no-cache
-      X-Request-Id:
-      - bfd0c00b-dafa-4122-95e3-6fae6676bf05
-      X-Runtime:
-      - '0.052157'
-      Strict-Transport-Security:
-      - max-age=31536000; includeSubDomains
-      Transfer-Encoding:
-      - chunked
-      Via:
-      - 1.1 vegur
-    body:
-      encoding: UTF-8
-      string: ''
-  recorded_at: Thu, 01 Oct 2020 14:24:32 GMT
-- request:
-    method: post
-    uri: https://api.churnbuster.io/v1/cancellations
-    body:
-      encoding: UTF-8
-      string: '{"subscription":{"source":"in_house","source_id":1},"customer":{"source":"in_house","source_id":1,"email":"email5@example.com","properties":{"first_name":"John","last_name":"Von
-        Doe"}}}'
-    headers:
-      Content-Type:
-      - application/json
-      Accept-Encoding:
-      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
-      Accept:
-      - "*/*"
-      User-Agent:
-      - Ruby
-  response:
-    status:
-      code: 200
-      message: OK
-    headers:
-      Server:
-      - Cowboy
-      Date:
-      - Thu, 01 Oct 2020 14:24:33 GMT
-      Connection:
-      - keep-alive
-      X-Frame-Options:
-      - SAMEORIGIN
-      X-Xss-Protection:
-      - 1; mode=block
-      X-Content-Type-Options:
-      - nosniff
-      X-Download-Options:
-      - noopen
-      X-Permitted-Cross-Domain-Policies:
-      - none
-      Referrer-Policy:
-      - strict-origin-when-cross-origin
-      Content-Type:
-      - application/json
-      Cache-Control:
-      - no-cache
-      X-Request-Id:
-      - aa57bbfb-aa49-4f4c-bad9-a3e9a87335bd
-      X-Runtime:
-      - '0.070606'
-      Strict-Transport-Security:
-      - max-age=31536000; includeSubDomains
-      Transfer-Encoding:
-      - chunked
-      Via:
-      - 1.1 vegur
-    body:
-      encoding: UTF-8
-      string: ''
-  recorded_at: Thu, 01 Oct 2020 14:24:33 GMT
-- request:
-    method: post
-    uri: https://api.churnbuster.io/v1/payment_methods
-    body:
-      encoding: UTF-8
-      string: '{"payment_method":{"source":"in_house","source_id":"1-1","type":"card","properties":{}},"customer":{"source":"in_house","source_id":1,"email":"email6@example.com","properties":{"first_name":"John","last_name":"Von
-        Doe"}}}'
-    headers:
-      Content-Type:
-      - application/json
-      Accept-Encoding:
-      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
-      Accept:
-      - "*/*"
-      User-Agent:
-      - Ruby
-  response:
-    status:
-      code: 200
-      message: OK
-    headers:
-      Server:
-      - Cowboy
-      Date:
-      - Mon, 05 Oct 2020 10:55:30 GMT
-      Connection:
-      - keep-alive
-      X-Frame-Options:
-      - SAMEORIGIN
-      X-Xss-Protection:
-      - 1; mode=block
-      X-Content-Type-Options:
-      - nosniff
-      X-Download-Options:
-      - noopen
-      X-Permitted-Cross-Domain-Policies:
-      - none
-      Referrer-Policy:
-      - strict-origin-when-cross-origin
-      Content-Type:
-      - application/json
-      Cache-Control:
-      - no-cache
-      X-Request-Id:
-      - 585f1c6a-fb36-4cb4-9127-2f80636d33d9
-      X-Runtime:
-      - '1.184629'
-      Strict-Transport-Security:
-      - max-age=31536000; includeSubDomains
-      Transfer-Encoding:
-      - chunked
-      Via:
-      - 1.1 vegur
-    body:
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-      string: ''
-  recorded_at: Mon, 05 Oct 2020 10:55:31 GMT
-recorded_with: VCR 6.0.0
diff --git a/spec/lib/solidus_subscriptions/churn_buster/client_spec.rb b/spec/lib/solidus_subscriptions/churn_buster/client_spec.rb
deleted file mode 100644
index 9efb2e64..00000000
--- a/spec/lib/solidus_subscriptions/churn_buster/client_spec.rb
+++ /dev/null
@@ -1,59 +0,0 @@
-# frozen_string_literal: true
-
-RSpec.describe SolidusSubscriptions::ChurnBuster::Client, vcr: { cassette_name: 'churn_buster', record: :new_episodes } do
-  describe '#report_failed_payment' do
-    it 'reports the failed payment to Churn Buster' do
-      client = described_class.new(
-        account_id: 'test_account_id',
-        api_key: 'test_api_key',
-      )
-
-      order = create(:order, subscription: create(:subscription))
-      response = client.report_failed_payment(order)
-
-      expect(response).to be_success
-    end
-  end
-
-  describe '#report_successful_payment' do
-    it 'reports the successful payment to Churn Buster' do
-      client = described_class.new(
-        account_id: 'test_account_id',
-        api_key: 'test_api_key',
-      )
-
-      order = create(:order, subscription: create(:subscription))
-      response = client.report_successful_payment(order)
-
-      expect(response).to be_success
-    end
-  end
-
-  describe '#report_subscription_cancellation' do
-    it 'reports the failed payment to Churn Buster' do
-      client = described_class.new(
-        account_id: 'test_account_id',
-        api_key: 'test_api_key',
-      )
-
-      subscription = create(:subscription)
-      response = client.report_subscription_cancellation(subscription)
-
-      expect(response).to be_success
-    end
-  end
-
-  describe '#report_payment_method_change' do
-    it 'reports the payment method change to Churn Buster' do
-      client = described_class.new(
-        account_id: 'test_account_id',
-        api_key: 'test_api_key',
-      )
-
-      subscription = create(:subscription)
-      response = client.report_payment_method_change(subscription)
-
-      expect(response).to be_success
-    end
-  end
-end
diff --git a/spec/lib/solidus_subscriptions/dispatcher/payment_failed_dispatcher_spec.rb b/spec/lib/solidus_subscriptions/dispatcher/payment_failed_dispatcher_spec.rb
index 103f176a..47ece4b2 100644
--- a/spec/lib/solidus_subscriptions/dispatcher/payment_failed_dispatcher_spec.rb
+++ b/spec/lib/solidus_subscriptions/dispatcher/payment_failed_dispatcher_spec.rb
@@ -25,20 +25,5 @@
 
       expect(order.state).to eq('canceled')
     end
-
-    it 'fires an installments_failed_payment event' do
-      stub_const('Spree::Event', class_spy(Spree::Event))
-      installment = instance_spy(SolidusSubscriptions::Installment)
-      order = create(:order_with_line_items)
-
-      dispatcher = described_class.new(installment, order)
-      dispatcher.dispatch
-
-      expect(Spree::Event).to have_received(:fire).with(
-        'solidus_subscriptions.installment_failed_payment',
-        installment: installment,
-        order: order,
-      )
-    end
   end
 end
diff --git a/spec/lib/solidus_subscriptions/dispatcher/success_dispatcher_spec.rb b/spec/lib/solidus_subscriptions/dispatcher/success_dispatcher_spec.rb
index 366e1f7c..aa48f4dc 100644
--- a/spec/lib/solidus_subscriptions/dispatcher/success_dispatcher_spec.rb
+++ b/spec/lib/solidus_subscriptions/dispatcher/success_dispatcher_spec.rb
@@ -11,20 +11,5 @@
 
       expect(installment).to have_received(:success!).with(order)
     end
-
-    it 'fires an installments_succeeded event' do
-      stub_const('Spree::Event', class_spy(Spree::Event))
-      installment = instance_spy(SolidusSubscriptions::Installment)
-      order = create(:order_with_line_items)
-
-      dispatcher = described_class.new(installment, order)
-      dispatcher.dispatch
-
-      expect(Spree::Event).to have_received(:fire).with(
-        'solidus_subscriptions.installment_succeeded',
-        installment: installment,
-        order: order,
-      )
-    end
   end
 end
diff --git a/spec/lib/solidus_subscriptions_spec.rb b/spec/lib/solidus_subscriptions_spec.rb
deleted file mode 100644
index f99119f5..00000000
--- a/spec/lib/solidus_subscriptions_spec.rb
+++ /dev/null
@@ -1,30 +0,0 @@
-# frozen_string_literal: true
-
-RSpec.describe SolidusSubscriptions do
-  describe '.churn_buster' do
-    context 'when Churn Buster was configured' do
-      it 'returns a Churn Buster client instance' do
-        allow(described_class.configuration).to receive_messages(
-          churn_buster?: true,
-          churn_buster_account_id: 'account_id',
-          churn_buster_api_key: 'api_key',
-        )
-        churn_buster = instance_double(SolidusSubscriptions::ChurnBuster::Client)
-        allow(SolidusSubscriptions::ChurnBuster::Client).to receive(:new).with(
-          account_id: 'account_id',
-          api_key: 'api_key',
-        ).and_return(churn_buster)
-
-        expect(described_class.churn_buster).to eq(churn_buster)
-      end
-    end
-
-    context 'when Churn Buster was not configured' do
-      it 'returns nil' do
-        allow(described_class.configuration).to receive_messages(churn_buster?: false)
-
-        expect(described_class.churn_buster).to be_nil
-      end
-    end
-  end
-end
diff --git a/spec/models/solidus_subscriptions/subscription_spec.rb b/spec/models/solidus_subscriptions/subscription_spec.rb
index 6b05cced..49d855aa 100644
--- a/spec/models/solidus_subscriptions/subscription_spec.rb
+++ b/spec/models/solidus_subscriptions/subscription_spec.rb
@@ -87,18 +87,6 @@
         subscription: subscription,
       )
     end
-
-    it 'tracks payment method changes' do
-      stub_const('Spree::Event', class_spy(Spree::Event))
-
-      subscription = create(:subscription)
-      subscription.update!(payment_source: create(:credit_card, user: subscription.user))
-
-      expect(Spree::Event).to have_received(:fire).with(
-        'solidus_subscriptions.subscription_payment_method_changed',
-        subscription: subscription,
-      )
-    end
   end
 
   describe '#cancel' do
diff --git a/spec/models/spree/wallet_payment_source_spec.rb b/spec/models/spree/wallet_payment_source_spec.rb
deleted file mode 100644
index ff057f9c..00000000
--- a/spec/models/spree/wallet_payment_source_spec.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-# frozen_string_literal: true
-
-RSpec.describe Spree::WalletPaymentSource do
-  describe 'setting it as the default' do
-    it 'reports a payment method changed event for subscriptions that use the default payment source' do
-      stub_const('Spree::Event', class_spy(Spree::Event))
-      user = create(:user)
-      subscription = create(:subscription, user: user)
-      payment_source = create(:credit_card, user: user)
-      wallet_payment_source = user.wallet.add(payment_source)
-
-      user.wallet.default_wallet_payment_source = wallet_payment_source
-
-      expect(Spree::Event).to have_received(:fire).with(
-        'solidus_subscriptions.subscription_payment_method_changed',
-        subscription: subscription,
-      )
-    end
-  end
-end
diff --git a/spec/subscribers/solidus_subscriptions/churn_buster_subscriber_spec.rb b/spec/subscribers/solidus_subscriptions/churn_buster_subscriber_spec.rb
deleted file mode 100644
index a3e9a23b..00000000
--- a/spec/subscribers/solidus_subscriptions/churn_buster_subscriber_spec.rb
+++ /dev/null
@@ -1,76 +0,0 @@
-# frozen_string_literal: true
-
-RSpec.describe SolidusSubscriptions::ChurnBusterSubscriber do
-  describe '#report_subscription_cancellation' do
-    it 'reports the cancellation to Churn Buster' do
-      churn_buster = instance_spy(SolidusSubscriptions::ChurnBuster::Client)
-      allow(SolidusSubscriptions).to receive(:churn_buster).and_return(churn_buster)
-
-      subscription = create(:subscription)
-      Spree::Event.fire('solidus_subscriptions.subscription_canceled', subscription: subscription)
-
-      expect(churn_buster).to have_received(:report_subscription_cancellation).with(subscription)
-    end
-  end
-
-  describe '#report_subscription_ending' do
-    it 'reports the cancellation to Churn Buster' do
-      churn_buster = instance_spy(SolidusSubscriptions::ChurnBuster::Client)
-      allow(SolidusSubscriptions).to receive(:churn_buster).and_return(churn_buster)
-
-      subscription = create(:subscription)
-      Spree::Event.fire('solidus_subscriptions.subscription_ended', subscription: subscription)
-
-      expect(churn_buster).to have_received(:report_subscription_cancellation).with(subscription)
-    end
-  end
-
-  describe '#report_payment_success' do
-    it 'reports the success to Churn Buster' do
-      churn_buster = instance_spy(SolidusSubscriptions::ChurnBuster::Client)
-      allow(SolidusSubscriptions).to receive(:churn_buster).and_return(churn_buster)
-
-      order = build_stubbed(:order)
-      installment = build_stubbed(:installment)
-      Spree::Event.fire(
-        'solidus_subscriptions.installment_succeeded',
-        installment: installment,
-        order: order,
-      )
-
-      expect(churn_buster).to have_received(:report_successful_payment).with(order)
-    end
-  end
-
-  describe '#report_payment_failure' do
-    it 'reports the failure to Churn Buster' do
-      churn_buster = instance_spy(SolidusSubscriptions::ChurnBuster::Client)
-      allow(SolidusSubscriptions).to receive(:churn_buster).and_return(churn_buster)
-
-      order = build_stubbed(:order)
-      installment = build_stubbed(:installment)
-      Spree::Event.fire(
-        'solidus_subscriptions.installment_failed_payment',
-        installment: installment,
-        order: order,
-      )
-
-      expect(churn_buster).to have_received(:report_failed_payment).with(order)
-    end
-  end
-
-  describe '#report_payment_method_change' do
-    it 'reports the payment method change to Churn Buster' do
-      churn_buster = instance_spy(SolidusSubscriptions::ChurnBuster::Client)
-      allow(SolidusSubscriptions).to receive(:churn_buster).and_return(churn_buster)
-
-      subscription = create(:subscription)
-      Spree::Event.fire(
-        'solidus_subscriptions.subscription_payment_method_changed',
-        subscription: subscription,
-      )
-
-      expect(churn_buster).to have_received(:report_payment_method_change).with(subscription)
-    end
-  end
-end
diff --git a/spec/support/vcr.rb b/spec/support/vcr.rb
deleted file mode 100644
index ca8a14a4..00000000
--- a/spec/support/vcr.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-require 'webmock/rspec'
-require 'vcr'
-
-WebMock.disable_net_connect!
-
-VCR.configure do |config|
-  config.cassette_library_dir = "spec/fixtures/cassettes"
-  config.hook_into :webmock
-  config.configure_rspec_metadata!
-end