Currently, you will only get a notification for the first payment received via TradeGecko Payments. This is to notify you that we were able to successfully transact through TradeGecko Payments. For succeeding payments, the notifications will then be disabled.
As a workaround, you can also set up a workflow in our TradeGecko Automation where you can send an email to yourself if an order has been marked as 'Paid'. For more information on setting this up, read this.