Hi there, My Apple ID also is the one I use in App Store Connect. It has "admin" and "account holder" permissions.
I am trying to build an app with in app purchases for the first time. However, whenever I try and go through the in app purchase flow I get an error You are not authorised to make purchases of this InApp in sandbox at this time.".
I have tried making my main apple ID as a sandbox user as well, but it won't let me as it already exists (makes sense).
I have completed all the agreements for Tax and banking and they say active.
What am I missing here?
Thanks in advance