I received the following email from PayPal:
Please check your server that handles PayPal Instant Payment Notifications (IPN). IPNs sent to the following URL(s) are failing:
http://https://<site return details>
...
The first thing I noticed is the double http reference in the email. Obviously incorrect.
I've edited the button several times to no avail even removing the http from the configuration. PayPal still builds the return link with the ':' missing from the link.
I'm at a loss as to what is wrong. This worked last week so has just started within the last day or so.
Has anyone else come across this? Any ideas how to fix it?
