I was one of the admins that took the decision to ban. Unfortunately, for a 7 years old, as he said he was on the server, he's using unacceptable language. I mean we are not going to teach him how to speak or behave, we are not his parents, but it is your responsibility to put a password on your computer so he doesn't come and do such things.
That being said, the ban stays until I get in touch with our higher staff so I can take a better decision about it.
Thanks for your patience, until then, you may wanna talk to your brother.