thelaw on "Can't get subdomains to work on Multisite"

Problems are apparently worse than this - I can see the sites on the subdomain but can't login to the admin panel. All new sites that get created are inserted into the admin panel but I still have "1 site and 1 user" when I go to the Network admin dashboard. I have 3 sites created. When I try to login to the back end on any of these sites at sub.domain.com/wp-admin using the only user admin, I get an invalid permission. So I made every user a superadmin. Now I can login but I only get into the main site, not any of the multisites.

This is a duplicate of this problem with no solution I can see:

http://wordpress.org/support/topic/created-2-sites-in-wp-but-dashboard-only-says-you-have-1-site-and-1-user?replies=10

So if I login at sub.domain.com/wp-admin/ or try to switch using the network control panel and sites and go to dashboard for the site, I'm back in the dashboard for the main site. None of the subdomains are working for the admin panel.