Well my SMF 2.0.15 and in my membersgroup adminisitsrator rank is bugged I can't modify it I think because I was adding HTML code instead of name to make it picture and now I can't modify it so I need help
The only way to fix this is to edit it directly in the database. Go to phpmyadmin, find your database, find smf_membergroups then edit the row with id 1.
where can I get the database
Does your hosting account have cPanel?
I am nob in these things what is cPanel?
are you the owner of the forum? if so you should have access to the hosting account which should have some type of control panel for managing the back end of the hosting account/server.
I can't understand what u mean ? I am not the Forum Owner but I have Administrator Access
then you cannot fix this, you need someone with full access to the hosting to fix this.