Thanks, interesting. On my side I am facing an issue with my first subscription: the Status of the IAP is "Waiting for Review" for weeks. We want to submit the app to app for review, but the section to select an IAP with the app is not appearing (so we can't link). According to online sources, if we submit a new app for review, without selecting the IAP that goes with it, then the app may be released in the App Store without users being able to purchase the IAP. Regardless, our IAP has been sitting in "Waiting for Review" status for a while now and I'm concerned it may never be approved.

I'm facing the same issue, how did you solve it? Thanks a lot.