Reply To: Payment Notifications and Payment not updating in plugin with error email 302

This is the correct url:

And it is a page not found 404 but I thought there must a reason for this because that is the exact location of the paypal_ipn.php file.

The client has started receiving genuine reservations using Paypal in live mode. Paypal receives the money but the boooking is not updated to approved.

Where in the wordpress main settings do I need to set the URL?