compte bloqué
You might want to contact support:
https://support.chess.com/article/346-contact-us
You likely are talking about the Sportsmanship Policy: https://support.chess.com/article/627-sportsmanship-policy
They was a bug with the time between games not working correctly, so it's possible that is still happening.
Bonjour, mon compte est bloqué. Chess.com m’indique que j’aurais viole les règles d’éthique du jeu. Je pense qu’il y a erreur. Comment régler ceci?