Key code was used on my account but now; 2 years later it asks for a new key code and the key code given by Steam says it's already been used (yeah, by me). The game is ♥♥♥♥ anyway. Why the ♥♥♥♥ can't you just use my Steam account and avoid this whole thing?

Key code was used on my account but now; 2 years later it asks for a new key code and the key code given by Steam says it's already been used (yeah, by me). The game is shit anyway. Why the fuck can't you just use my Steam account and avoid this whole thing?