I published an app on the Amazon appstore a while ago. It's a free app with an in-app item you can buy to unlock the full version of the app. Tested it with the App Tester, then submitted it, and tested it on the live version by buying the item for myself on my personal Amazon account. It worked fine.
Forgot it for a few months, then I got a few users complaint about the fact they bought the full version, but the app was being locked again.
I went to my phone and checked the app, the same happened for me: the app was locked. I tried uninstalling it and then the Amazon Appstore app (it's called Underground now?), and then reinstalling everything, the purchased item shall be restored but is not.
What can I do to understand where the problem is, and if it's on my side (I don't believe so, works well with the App Tester) or on Amazon's side? My production version of course, I can't debug it and have no logs to understand what's happening.
So, first question: do you have any idea of why it's happening?
Second question: can I make a new version of the app (where I enable debug/log options) so I can test it live with my real account (not the App Tester), but without submitting it to everybody?