solved
Where did you buy it from? and if you bought it from a legitimate retailer, then call your bank/CC company to see if they cancelled it .
It seems some are having problems buying
https://forum-en.gw2archive.eu/forum/support/support/Payment-Authorization-Failed-3
(edited by Blude.6812)
Did you buy it from an authorized realtor? If not you could have had a bad key.
alright guys .. it was a mistake by their side and they apologized to me about it .. problem solved
For having no support in this game they seemed to get your problem solved pretty quickly.