Testing with testflight the IAP work with sandbox. But Apple Review was rejected. It was explained that the IAP could not be found.
I cancelled the review, added the IAP to all countries again.
The IAPs are in status waiting for review.
Now when preparing the version, I cannot choose anymore the IAP. I don't find the option anymore to add the IAP products on the version page.
Contracts are all active and in the app for me and others it is working.
Topic:
App Store Distribution & Marketing
SubTopic:
App Store Connect
Tags:
StoreKit
App Store Connect
In-App Purchase