Right… took me a day to figure it out, too – If you’re using a subdomain install, the respective dashboards for all of the WP sites are being served by the one instance of WP. The other subdomains (i.e. https://sub1.main.com/wp-admin) will also work – BUT your browser will first complain that the cert is for the wrong site. I just made an exception so that my browser will save that exception and continue on… Of course this is not very elegant if you’re a WP hoster, but if it’s just for your own sites, it works just fine. I’m running an instance like how I’ve mentioned.
