When you click on the log-in button while viewing the forums, it will not log you in.
Go to http://battledawn.com
and click the log-in button from there.
When it takes you back to the homepage, click on the "forums" tab in the navigation. And you SHOULD be logged in.
The one way to tell if you correctly logged in or not, is if it gives the message saying that you logged in, and something about 'click here to go back ...blah blah blah'