MyBB Community Forums

Hello Everyone,

Recently i add MyBB forum to my Website. After installation i try to create a user on my forum but i can't do this. I can't even find the issue. When you enter a username it stays red, no matter the name you choose.  The other fields work fine, even captcha is accepted.  I can also create users manually just fine through the admin panel, so not sure what's going on. I am absolute newbie to MyBB. So please help me.

Here's my Forum Link : <- snip ->

run file verification tool from below location. what does it report ?
forum admin panel >> tools & maintenance >> file verification

ignore reported images & ignore files reported from install folder & its sub-folders

also cookie path is incorrect for your forum. it should be /Forum/
it can be changed at Site Details page of configuration section in forum admin panel

File verification output:
Congratulations! No corrupt files have been found on your installation.

And cookie path is also changed.
Now user can register successfully and even login successfully. Thankyou so much for your help.