We recently had to switch our payment method from PayPal Pro to PayPal Pro iFrame for PCI Compliance. But since doing so all orders placed are now showing as missing.
I have checked the settings and researched the issue and a lot of people have an issue with their IPN ours is set to:
https://OURDOMAIN.com/index.php?route=e ... ame/notify
I've also uninstalled and reinstalled the method in case it was an API issue but it's still happening. I can confirm that we are receiving the payment successfully, it just appears that the IPN redirect is failing for some reason.