Hi AresXX22,
Do you still have a receipt for the purchase that you can show us?
Or can you perhaps provide a photograph of your game disc and the case and booklet maybe? If you can, take a picture of that on top of today's newspaper with the date visible and that will be good enough as proof of purchase too.
Then we'll give you a new key, but we do need some kind of proof first that you really own the game, for obvious reasons of course. If you have such proof, send me a pm and include that in it, and we'll get you a new key.
Regards,
Fred