I don't have the answer to your technical question; hopefully Chess.com can respond.
But I think you should never abort a game (short of an unforeseen emergency). Assume within the timeframe of the game you've signed up for (e.g., 30m/10s), that you are committed to that game. Sometimes an opponent is simply stuck on a move; on other occasions, his/her system may have problems that are bogging them down (and equally, or more frustrating to them). Whatever the reason, the time allowed for each person is wholly theirs to decide how to use - as one of the fundamental rules and norms of the game. Aborting a game rejects that principle.
My opponent told me that he got this message when our game started...
MrVeryGood: NM SamCopeland may have violated our Fair Play policy - it has been noted and they may have their account restricted.)
I hadn't done anything but start the game. My opponent suggested that all my opponents are getting this message... To my knowledge, I haven't done anything that violates fair use except occasionally abort a game when my opponent seems to be idle (and I really don't think that should be a violation...). If it is true that all my opponents are getting this message, I would really like that to be fixed.