I have a few questions regarding Pro Sites.
First, how can a user update their payment information and account information on either the frontend or backend of a site?
What if a user wants to cancel their paid account and go back to the free version? How can they do that?
How can I get the premium upgrade button to appear on the main site too when a user is logged in? Currently, if the user is in their subdomain, they see a button to upgrade their account, but if they go to the main site, they no longer see that button and some of their admin bar links.
Lastly, how can I speed up the multisite login? It seems slow when I try signing in.