It's the same as reporting anything else: https://support.chess.com/customer/portal/emails/new
See the full FAQ at https://support.chess.com/customer/en/portal/articles/1444879-cheaters-cheating-what-you-need-to-know
need to report cheating
Sort:
Second paragraph (although you probably want to read the whole article).
https://support.chess.com/customer/portal/articles/1444879
Hey does anyone have the address for reporting cheating please