BuddyPress.org

Hi,
My wordpress site is having a challenge of login in, my users keep complaining of difficulty trying to log in.

A user might login successfully now, and latter it will be saying wrong user name or password.

So, please do you have a solution to solve this problem?

I really want a single sign on, where a user can also sign in using social media, eg facebook, gmail, twitter ETC

My site uses buddypress and bbpress

My site: http://www.dliplanet.com