Of course you'll get banned if you piss off Winter and Miswa, though I think Unica is a bit patient since she's quite new but that doesn't mean she'll not ban you for some reason. Winter is the most strict among the three. If you joined Warzone or the GM Quest Center you'll understand what I mean so don't piss Winter off or you'll regret it.
To keep yourself from getting banned, just don't do anything that's shady. Period. Like, if someone sent you an equipment in your mail. Don't retrieve it, instead report it to them by sending a ticket coz someone might be trying to frame or set you up.
Edit: I almost forgot to tell you. This is not SEAL Online Indonesia. My Indonesian friends told me that the server there is filled with cheaters, hackers, etc. so that's why they moved to this server. So don't expect the same treatment here, especially with Winter and Miswa around. Those two can go on a banning spree if you gave them enough reason.