MyBB Community Forums

here is the story
The old url was
Braindirector.com/nimbuzz
I renamed it to
Braindirector.com/cyberhub
I configured mybb too to use new url. Now it open but when we click any
forum it starts loading
Braindirector.com/CYBERHUB/forum-
introduction
But ends up showing
Braindirector.com/NIMBUZZ/forum- introduction 404 not found

I checked and it works fine at my end. No problems.. Clear your browser cache and rechek.

@bijumk! Thanks for replying. The admininstrators here are "Go for it without understanding"
I had copied a ready made forum to save myself time, nathan saw that and thought i am involved into hacking. He should have asked me once. They denied support.
Anyways yeah that is working fine now because my host's support team is great. Even though they don't use mybb and it is not their duty to fix website/forum related issues yet they jumped in and fixed everything all right.
The problem was the references in database and .htaccess to old forum name

They denied support because they experienced it before. Maybe yours is another story.