Hello,
I have configured V2 server notifications for my applications. I am receiving different types of notifications (https://developer.apple.com/documentation/appstoreservernotifications/notificationtype) in my webhook. Something changed after November 18th. EXPIRED notifications are no longer received. Has something changed in the API? Other notification types still work.
I see you corrected your issue, could you please elaborate what your solution was server side? My team is running into the same issues and we are dead in the water.