Plz read im barrows twin

Hey im on my moms computer and my friend made his acc at my main computer and he had advertised a website so it had banned my ip i dont know why but i dont think i should be banned because he can still get on at his house so can you guys unban me please??

 

Is there any way to prove that it wasn't you who made the account?

 

ummm i dont think so..im not sure other than ip's n stuff but i dontknow his and my own