You should open a ticket.
https://support.chess.com/customer/portal/emails/new
My pieces will not respond when I am attempting a move. They appear to be "jittery" when trying to move, but, won't. Any suggestions ?
Hoe can I use the chess engine
https://support.chess.com/article/693-how-do-i-use-the-analysis-board
Can I get it? how? Please help