Super User lost all access to WP backend menus

Super User is unable to see any of the admin menus along the left sidebar other than Dashboard, Profile, and Membership. Please help! I have the Coming Soon page up. But obviously cannot disable it, as I cannot access this menu. I've spent an hour on the youtube videos, configuring Membership options, and don't want to have to delete the plugin via FTP if I don't have to. Is there an easy way to have all my access back for the Super User? Thanks!