so, he should post unban appeal or wait for the unban date..which is a week later. The ban is valid as his PC was used to break the server rules, Stitu should not allow his friend to use the PC for ban evading. You could guide him to post unban appeal to unban the UID or he can use another PC, the server recorded that he joined the server with another UID, 12.4 days ago.
It's just weird, the UID was banned 12.8 days ago & why you only post it now, exactly after Brian mentioned OTMAN's nick in his topic ?