Fatal Error: Membership PlugIn

Dear Sirs... It happens, I was setting the PlugIn WPMUDEV "Membership" and foolishly assigned a test users, with 01 days of read-only access. That somehow I deactivated my Super Administrator privileges.

The point is that in the Dashboard, could only deactivate from the Membership plugin, which is what finally did. But now when I try to enter as the Meta I get: Fatal error: Allowed memory size of 100663296 bytes exhausted (tried to allocate 1775659 bytes) in / home / itusers / public_html / wp-includes / functions.php on line 364

I know it's a query newbie, I hope I can help and already appreciate your attention to my post