I encountered the same issue with my app that was first released on 7/21. It all of a sudden stopped working on 7/30 with the same behavior everyone else has described on the same release from 7/21 in production. I used the workaround suggested by @SPEEDCUP using SubscriptionStoreView(productIDs:) instead of SubscriptionStoreView(groupID:), and released a new version today, and that fixed the problem. Would still love to see this fixed, because I would rather not have to hardcode the product IDs, instead of the group ID. I submitted the issue through Feedback Assistant and the issue number is FB14689938.