My friend haved another problem - lost your progress two times. He haved 3k+ hours in this game.
Mad wrote to the devs that if they can't secure the progress and he must to make backup of it, then he will hack and do not want to see any ban on your account.
Since then, it has been half a year since, and has not banned him, although he has officially said he will do it.
Personally, I think that since the game is b2p you should have access to everything.
btw. You turn off your steam cloud?