Do you have any kind of proof that it was your brother? We see people will excuses like "it was my brother" alot of times... So proof or the unban isn't going to take place.
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I had to modify my post after like 30 seconds... I just looked at the chat and seen you saying "unban me im not hacker" Also you never give us a reason of your ban... So my question is Why did you have hacks on your computer?