https://support.chess.com/article/648-what-do-i-need-to-know-about-fair-play-on-chess-com
If you think a member may be using disallowed resources, you should report them, but should not post about it in the forums.
Also, discussions of cheating, potential cheating, or cheat detection are not allowed in the general forums.
I played this guy today. His username is [removed -- MS] and his opening was giving off weird 'computer' vibes. For eg on move 5 he played rook b1?! so I wrote in chat these words "are you a cheater?"
He did not reply. However, his moves became less weird. He blundered a few power pieces among which was a rook. He is on the platform since 2021. Past 30 days his rating has gone up like 200 ELO. Also, the game ended in a draw. I was winning after blunders but without realizing I ended accidentally in a 3fold repetition
I'll be happy to send the game link or share the game. I don't know how to tho.
Cheers