>oh dont try to play that event cause they might search for cheaters
You should've started with that. That's the most important piece of information.
@HarcoZhang FM is short for Full Marks, which is a multiplayer event. There are two multiplayer events in the game, the other being House Pride (which we often abbreviate to HP). Whenever you see us talking about one of these events coming up, get ready to stop playing the game for at least a week. Why? Let me explain.
If you get sorted into a multiplayer group (which happens automatically when you log in during FM), players are given the ability to report other players that they suspect of cheating. If
anyone in your multiplayer group gets reported, Jam City will silently analyze the accounts of
everyone in your group. Including you. Even if you turn off your cheats or play the game using the vanilla app, they will go through your account's history and activity if they suspect someone else in your group is cheating. As soon as they see anything out of the ordinary, you get banned within a few days.
If you don't want to get banned, don't play during Full Marks. Don't even log in or open the app. Act like the game doesn't even exist. House Pride is
marginally safer, because you won't get sorted into a HP group until you perform an action that earns you House Points in the game. But since there are many actions that will give you House Points, you're better off not playing at all.
The only other way you can get banned is by contacting Jam City support. If you encounter a glitch or there's a problem with your game, do not contact them under any circumstances. This will also cause them to analyze your account and ban you. You'll simply have to find a way around the glitch (such as playing the vanilla game for a bit) or stop playing until it gets patched in a future update.