So a problem showed up today...

I woke up and found out that I was kicked from the TS server I was in for changing my name to N****

I didn't do that but it came from my IP.

I need to defend my case but I need to know these following answers.

1) Can someone change my name on a server under my IP? (I live alone so It wouldn't be someone using my computer)

2) I was an admin but not a higher ranked admin, what made me less protected then everyone else?

I really need help guys, thanks in advance..