SKPaymentQueue addTransactionObserver asking for App Store password on startup after in-app purchase

Question

My app is using in-app purchases, and most of my users can purchase just fine without any problems. For these folks, my app downloads the content after the purchase succeeds

Answer 1

I resolved it by deleting the iTunes Connect test user account related with this issue. App actually asked once again to sign in, but then it disappeared (I've also deleted app, restarted iPhone and logged in as a normal non-sandbox user, made a real restore in other non-sandbox app and then launched the app)