[Shadow Demon UK]

Has anyone had problems redeeming prepaid codes before? I bought FIFA 15 from cdkeys and when i enter the code it keeps coming up with an error message saying 'something went wrong' but doesn't actually say what went wrong!?!

I used the online Microsoft support chat and they said the code is correct and hasn't been redeemed yet and to keep trying it and it will work...they couldn't tell me what is actually wrong?!?! Is this something that happens from time to time? I'm getting fed up of putting in the same 25 digit code time and time again! I might just stick to discs rather than digital downloads from now on...!