For some reason it's keeping me in the trial edition of diablo 3 reaper of souls. I have the game key it's just saying incorrect or already used code etc.
# 1 Sep 27, 2016
# 5 Dec 19, 2016Rickster,
A game key can only be used one time to add a game client to a Battle.net account. Once it's been used, it can not be used again. As Timberwolf has stated, you will need to purchase your own copy of the game, not a "used" one if you want it to be registered.