why my modes and the power as a admin? thay still can get to the admin page
Because you made people, the administrators that are willing to mess up the forum whatever the cause. Like simply sibyl said, it was not hacked, you gave away too much administration privileges to members YOU DO NOT KNOW nor TRUST in this matter and they messed up the forum settings.
So technically, it's YOUR FAULT that you put them in the "Administration" staff in the first place.
I suggest like simply sibyl said, do not GIVE OUT any administration privileges to people that you do NOT know, unless you're taking a BIG risk. Give it to someone LOYAL that you KNOW, that WILL NOT mess up the forum.
That's my advice for you man and I wish you luck rebuilding the forum. Remember that. Thanks!