https://support.chess.com/article/648-what-do-i-need-to-know-about-fair-play-on-chess-com
https://www.chess.com/article/view/online-chess-cheating
https://www.chess.com/article/view/chesscom-update-december-2023#FairPlay
Public accusations are not allowed. If you feel any other member used disallowed resources, you should use the report option on their profile.
.That said, discussions of cheating, potential cheating, or cheat detection are not allowed in the general forums. This type of discussion is only allowed in the Cheating Forum club, though you also can't publicly accuse members there either.
https://www.chess.com/club/cheating-forum
Hi, i play against a player named [removed -- MS] i investigate and really think he is a cheater. Look at this historic, a couple of games in a row with 98.5% 99% 100% on 20+ moves games at 1200 elo... Frustrating. Thanks if u can do something about him and if ur a real player who read this, keep going and good luck bro !