Game Center Error & In-App Purchase Sandbox Error - Solution (for legitimate purchases)

[nevaahe]

If you are receiving the "This is not a Test User Account.." error when attempting to make an In-App purchase and have used iFunbox to manage your device, this should fix the error.

When you use iFunbox it will create a folder on your device (/var/mobile/tdmtanf)

1) Using SSH or iFile delete the folder /var/mobile/tdmtanf
2) Delete the (legitimate) App you are attempting to do an In-App purchase for
3) Open Game Center and logout
4) Goto Settings > Store : Click your Apple ID & logout
5) Reboot
6) Open App Store and re-download the App you wanted to In-App purchase
7) Enter valid Apple ID when prompted
8) Run App and complete In-App purchase

If you still receive the error, try using MyOS to disable and re-enable App Store and then redo the steps.

Note, this is NOT the solution if you are sing AppS(y)nc, Instal(l)ous, or *any* other cracking tool. Stop using the crack and find the solution elsewhere.

Thanks to Cer0 for taking the time to help with this issue.

Original solution found at https://discussions.apple.com/thread...art=0&tstart=0

[Cer0]

Worked with him on this issue. Saw his installed list and source list in Cydia; all legit items.