You should probably file a ticket with support then. They're not mindreaders though. They'll need to know what version you're using to start, i.e. browser or one of the mobile apps and what version for the apps. Sounds like somehow you accepted another game without realizing it and I'm sure the developers would like to know about it.
https://support.chess.com/customer/portal/emails/new
second one today. I was playing a game. when I finished I saw another lost game where I have not moved? and fair play warnings. bug needs fixing. regda