I have submitted an app update for review and it has been rejected. The reason stated for the rejection is:
We found that your app exhibited one or more bugs, when reviewed on iPad running iOS 6.1, on both Wi-Fi and cellular networks, which is not in compliance with the App Store Review Guidelines.
After attempting to purchase additional content in your app, the user is presented with an alert stating that the app cannot connect to the iTunes Store. The user cannot continue with the purchase of additional content.
When I test with exactly the same binary that was submitted everything works fine. I suspected that the reviewer was using a regular account in the sandbox environment or a test account in the live environment, which would exhibit the behavior described, so I resubmitted.
Now I've been rejected again with the same reason. I have no idea what is going on - anyone ever seen anything like this?