Halo Infinite code

I got the code to get in the game but it says it has been redeemed. What do I do? This is for pc.

There was an issue with duplicate/invalid Steam keys earlier, resulting in codes having to be re-generated and published a few times. 343 have resolved this issue now and distributed new and working codes to everyone affected. If for any reason your new code still does not work, please file a support ticket on the Insider Support Site.

You can check for your new Steam key in one of these three places: