PaterAlf: Did you buy the key directly from GOG or from a shady keyseller like G2A or Kinguin? If you bought it from keyseller, it probably got revoked, because it was originally bought with a stolen credit card. In that case you shold contact the seller and ask for a refund.
If you bought it directly from GOG, you should try a
and if that doesn't work you should contact [url=http://www.gog.com/support/contact/my_orders_and_payments]support.
Yeah...about that stolen CC guy. He's been listing like twenty GOG titles on both Kinguin and G2A each day for the past two months straight.
What is rescuing him from his local authority?
I mean Warner Bro.s managed to send the local NZ cops here up MegaUploads ass
By the way, about forty of my games on other sites have come from Kinguin and G2A.
The only issue I've ever had was with GOG.
Seems to only use GOG as if it's an easy site to use dodgy cards on.