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It always failed when i try to make an In-App Purchase in Android
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The user is Log in in Game Mode, the game write and read Leaderboard, but In-App Purchase does’nt work.
I try also for iOS, and the same problem, does;nt work
I found this answer and it’s useful, try it.
How to check if an item is already bought ?
yes you can even you can download and install free in your pc windows and mac any android application