link forum

Hi, plz need help, i can not delete or edit a link forum ( The requested link forum could not be found. ) and i can not find it in the database. ( xf_link_forum ) Before this happens, i had been able to create multiple links, without any problems, only happened with this one. Can you help...

I want it open new windown or new tab? ex: https://xenforo.com/ when click link it open new windown or new tab? and change icon.