Recently purchased and installed Membership. I marked a page as restricted to Visitors, yet they can

So i've recently purchased and installed Membership on my website and to test things out i added a page to the negative rules of a Visitor. (I also marked that anyone not logged in or without an account is seen as a Visitor).

When I log out and visit the page however, i can still see it. Also when i visit the page on a different computer altogether. Am i doing anything wrong here?