Please Help me i am not able to login to my wordpress site

Someone please help me!

I got problem in logging in to my WordPress site.

My WordPress site was working good till i installed mybb in the sub-directory.

I have “example.com” site then i made a sub-directory “forum”in my primary domain “example.com” like->(example.com/forums/) and installed mybb in forums folder and now i am not able to login to WordPress site.

Please help!