IAP works fine with SDK-Tester but fails in live mode
Hi, I build an app with IAP. Testing with the SDK everything works fine. So, I submitted the app and Amazon put it in the Store but now in leve mode, I get the following message, when I purchase an in-app item: "An error occurred while processing your purchase." I checked all metadata and submitted all items in developer portal again. Now, all items are (again) in live mode but the message occurs. I´m really confused. Any ideas?