Membership plugin not letting Logged In users see content

We're getting inconsistent results when trying to log into site. After logging in using Firefox, the login page continues to be displayed (without username/password fields showing). When logging in with Chrome, the "Guidelines" page is available/viewable but the rest of the pages show the login page again. We're using the latest version of WP and reinstalled the Membership plugin. The default state for non-logged in users is set to show the Overview and Contact pages but non-logged users are also being taken to the login page. We've tested the site using the default WP 2013 theme and saw the same inconsistent responses. Any help/troubleshooting will be appreciated.