I thought it was because everyone has the "User Group" of "registered" and then the secondary user groups as premium or moderator. However, one of our admins cannot access it either even though his primary is administrator. I'm guessing it is because his secondary is registered. Why doesn't this overide with the primary user group? Also, when users upgrade to premium, it just makes their secondary user group premium so that's not really a workaround as I would have to manually change every new premium member to not have "registered" in any of their user groups.
How can I set this up so unconfirmed and registered can only see the nodes and thread titles and premium members, mods and admin can see all and post, reply, etc?