Adyen notification can update already completed payment

[rvdsteege]

If multiple attempts are made to complete a payment via the Adyen drop-in and the last one succeeds, the payment status is updated correctly to Success. However, later notifications for the earlier payments will change the payment status to Failed.

• https://github.com/wp-pay-gateways/adyen/blob/2.0.4/src/NotificationsController.php#L165-L170

Internal Help Scout ticket: https://secure.helpscout.net/conversation/1654523847/22841

[remcotolsma]

Discussed via Slack, multiple Adyen payments for 1 Pronamic Pay payment is probably not ideal.

[rvdsteege]

Discussed via Slack, multiple Adyen payments for 1 Pronamic Pay payment is probably not ideal.

Created issue https://github.com/pronamic/wp-pronamic-pay/issues/277 for this, as the original issue has been resolved.