In App purchase in iOS suddenly stop working ( Error code=5002 occurred )

Question

I have integrated in-App purchase in my application successfully. I tested it properly by making test user account in itunes. My in-app purchase worked fine. But suddenly my

Answer 1

Facing the same problem in ios 5.1 the store kit dosent work on simulator anymore you need to check it in the device.

And even after connecting to the device say you get an error code "Cannot connect to iTunes Store"

then that means that your device cannot contact the apple store and that is something which is not your fault.