Key Already Redeemed on Steam

I received a key for this game today on Keymailer and was very excited to finally get a chance to play. Unfortunately, when I tried to redeem the key, I was informed that it had already been redeemed on Steam. It’s not the end of the world, and I am not expecting to get another key (it would be nice though Haha) , but I thought it should be brought to your attention.

Thank you