Hi! I think it is because you have a problem in your device in the down-left so you can’t move the pieces there. If not, contact chess.com.
Couldn't move my rook?
same is happening to me.
If Windows 11, see this post:
https://www.chess.com/forum/view/help-support/touch-screen-not-working
I wasn't able to move the rook on a1 or the pawn on a2.
I don't think this is a secret rule in chess, so what could cause this?
Is there any way to fix it incase it happens again?
Seems like this lasted for the whole game, but only noticed it near the ending.
Cannot move the piece in the replay either.
Edit: This seems to be a recurring problem. Cannot do it in replays or games.