It's not a forever restriction, but you need to wait for the system to kick in if someone won't make the first move and let it abort the game for you. It's only a wait of something like 20 or 30 seconds. Anyway you can read all about it right here
https://support.chess.com/article/627-sportsmanship-policy
Hi Chess.com,
Yesterday i aborted a game as my opponent wasn't making the first move. I got a message that my account may be restricted and i will only be paired against those who are 'not a good sport'
Since i am not getting paired for a 15 10 game. I don't think this is fair.
You can see i regularly play this this time control. Can you please remove this restriction so i can continue to play?
Thanks!