Using the most recent updates of WordPress and  Buddypress, I am not able to login through the admin bar.  When I click “Login,” the page goes to the login page, where I put in the correct login information.  I am then redirected to the homepage, but the admin bar does not show that I am logged in, instead asking me to login or sign up.  This was not an issue yesterday and before, where it worked correctly.  Since it started this morning, I have cleared my cache, deactivated each plugin, reactivated, reinstalled a fresh BP, and created a new account of which I verified the activation, all to no avail.
I am certain that I am doing something wrong or I am missing some issue.  Could it possibly be a mySQL issue and if so, how do I correct said issue?
The site having this issue is http://www.carolinatalknetwork.com