Found the issue and the solution! Basically, Apple TV logs in the sandbox user to be the default user on Apple TV automatically. That means, that a non-sandbox user gets logged and tries to make a sandbox purchase, which causes the error. To solve this: Settings Users and Accounts Sign out the Sandbox Account Login with a normal sandbox user Do the purchase. Hope this helps!

We have tried to test out Xcode 15.3 and it seems that the issue still occurs. tvOS 17.2

I did some testing on iOS 16.1. It timed out every 30 seconds.