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
Check for the following as I had it in my viewDidLoad method. I had an app rejected when apple wanted me to go from non-consumable to consumable, however I left the following line in my viewDidLoad method: (I thought the password prompt was a issue with swapping from the test user to normal user back to the test user)
[[SKPaymentQueue defaultQueue] restoreCompletedTransactions];
Once removed the request for password stopped.
And I have left: [[SKPaymentQueue defaultQueue] addTransactionObserver:self];
in and the app has now been approved just fine.