As of now, it's working for me.
However, because of this and Apple's apparent lack of communication, we'll be implementing our own backup system, independent of receipt validation.
ATCraiger
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Post
Replies
Boosts
Views
Activity
I came here to ask the same questions. My IAP's were working when my app got approved a few days ago, but now they're failing. I'm getting code 21007 when I try to verify my receipts, and I'm getting this error on both endpoints, which shouldn't be possible.