Here is my site: http://www.theseattlevineproject.com
The plugin works beautifully in terms of logging users in and out but it seems like for some reason it only shows the user as logged-in when the URL is http://theseattlevineproject.com/index.php. It doesn't work when you just type of the base URL or when you click on any other page of the site. It's not logging the user out, it's just asking them to log in over and over again.
Any idea why this might be happening and how to fix it?