When I Upgrade Membership plugin Pluguin extensions is inacessible

Dear;

I try membership free for a few days, Today I decided to buy it, because I think was the element I need in a project.

I proceed to uninstall membership free, and no problem, and then when i install membership premium automatically plugin zone was inaccesible.

I try to delete all wp_m tables and no problem, but now if i don't have the membership free plugin in wp-content I can't access to plugin zone.

Sorry for my bad english. Thanks for all!