So, you tried to buy some downloadable content (DLC), but instead you just got an error message: “This is not a test user account.” This error message shows up because of an application called AppSync, which is only found on a jailbroken iPhone or iPod Touch. That’s right, jailbreaking isn’t always wine and roses. Luckily, it is a fairly easy fix. Unluckily, if you want to keep AppSync you’ll have to do this again and again until the AppSync developers fix it.
To make in-app purchases follow the steps below: 1) Uninstall AppSync from Cydia. 2) Uninstall your game or app. 3) Reboot your device. 4) Re-download the game or app from the appstore. 5) Make the in-app purchase. 6) (Optional) you can then reinstall AppSync… but only if you like doing the above five things over and over again.

One Comment
i tried this. OMG thank you so much!!