https://www.polygon.com/2018/3/25/17161890/grand-theft-auto-online-tunables-update-banning-banned

Grand Theft Auto Online’s community is reporting a wave of bans, either mistaken or for no good reason, following the game’s latest update. The bans seem to affect the PC version of the game as opposed to the console editions.

The bans in question, which last for 30 days, seem to coincide with Grand Theft Auto Online’s latest update — the “Southern San Andreas Super Sport Series” that rolled out on Friday and added a new vehicle and stock-car racing events to the open world game. It seems that in addressing a car-selling exploit, some players have gotten banned on suspicion of unpermitted modding behavior despite doing nothing wrong.