With due all respect to Gameforge Management staff, support and to all technical staff, Community Managers behind the game operation. Would you mind completing your report and be more transparent to all players and not just the circle of your employees knowing what is going on.
Doing A "re-roll" or "roll back" is a very heavy offense decision not to mention you have five servers. Meaning five owners of each servers. Do you mean to say that player cheat all five servers. lol. and you just roll back all of them five servers.
And to be able to tamper anything in your tera game that person must have a knowledge of your source code to be able to gain access to the Vanguard Event settings meaning that person is a former employee or GM. to be able to cheat and steal ingame. Also if you did do roll back have you already apprehended the culprit already before doing the roll back. otherwise that person is still out there and wil be able to do it again.