Hello, this is Christos from wappier. We are facing similar issue in our production operations. We observed that if you are trying to fetch more than 200 in-app products (aproximately) the system is broken. We created a post for our problem as well here but I think your observation and ours are similiar. Our post can be found here: https://developer.apple.com/forums/thread/805313 Hope we will get a response soon.