Even after I disable this plugin, it keeps sending my

Hi,
Even after I disable this plugin, it keeps sending my anonymous visitor to the protected page.. They can browse any post from my Wp blog.

I remember that time ago that functionality was working fine. If I want to have the membership plugin working I just have to enable it, if not, just disable it..

Now the only way to disable protected content is to deactivate the plugin from the whole network

Why?

Thanks