I confirmed that the permanent ban was justified with a senior admin, mainly because of "*DEAD* PoLksS : niggas???"
And as ryz stated, you can't kick people just because your friend couldn't join.
Check the rules, share it with your friends before you play, to avoid any future bans as im sure you're permanent ban has a chance of getting removed.
Thanks for the formal post too.

https://servers.war-lords.net/rules

Wait for a root admin to review the ban appeal.