cant make account

I want to make an account but there are already people at my school that have made accounts. So I cant make an account because it just says ''Problem...

Unfortunately, we have detected that the following username(s) have already been registered from your IP address. If you believe this is in error, or you are trying to legitimately change your account, please open a dispute and a sythe.org staff member will assist you. Make sure you include everything on this page in your dispute or it will not be addressed.''

My desired name is :Captain ke.
My email is: [email protected]
I dont have skype. I use discord.

 

Please create one from your home IP, not school