Xobor.com - official support forum

so,its my first time that im trying to make a forum with xobor,but there is few things i dont understand at all

A)When im banning member,he still can login to forum and act like nothing.
B)how can i close theard,and the post owner cant edit it?
C)how can i change every thing to english?
i prefer u add me to skype Johnftw4 and answer me there please