Change between Production (Live) and Sandbox (Testing) as required
Go to Settings > Integration Settings
Use https://www.kooomo.com/eshop/_voidCheckPayment/method/AmazonPay for Production (Live) or https://www.kooomo.com.zgstage.com/eshop/_voidCheckPayment/method/AmazonPay for Sandbox (Testing)
Add the IPN into the two fields below.
Check Kooomo for a test order to make sure a payment reference shows up in the background.
Check Amazon Pay to see if Kooomo order code is Visible in the backend of Amazon and that the payment gets automatically collected.
