no cheating on chess.com
If you feel that another member is using disallowed resources, you should report them directly to staff using the option on their.profile.
https://support.chess.com/en/articles/8562517-how-do-i-report-someone
That said, discussions about cheating, potential cheating, or cheat detection are not allowed in the general forums. If you want to discuss join the following club.
https://www.chess.com/club/cheating-forum