Add Pay with Amazon to your Spree Commerce solution.
Add spree_amazon_payments to your Gemfile:
gem 'spree_amazon_payments', github: 'amzn/spree_pay_with_amazon' gem 'spree_social', github: 'spree-contrib/spree_social', branch: '2-3-stable'
Bundle your dependencies and run the installation generator:
bundle bundle exec rails g spree_amazon_payments:install bundle exec rails g spree_social:install
You will need to configure Instant Notification Settings in order to accept the callback when a refund is completed. Configure your IPN settings by logging into your Seller Central Account.
The IPN URL will be in the Configuration section of your Spree Commerce instance.
Please see the user guide here for more information