Uninstalled and reinstalled Membership Plugin - Now the link is missing from admin navigation!

I was having issues with my subscription levels, so I uninstalled the Membership plugin and reinstalled, hoping that would help. But now I can't access the Membership plugin at all! There's no longer a link and dropdown menu on my admin navigation sidebar. I've unistalled and reinstalled a couple more times, using the manual FTP method as well as the Plugin Installer method.

The registration page I created works - it shows both step one and step two of the registration form - but I can't access anything. I'm at a loss!