I want to use the hAP as a client to connect to an AP I do not control that has a login page (same kind of thing Hotspot provides). How do I get to see the login page and log the hAP into the other network?

Make sure you are connected to the AP by checking for an IP and Gateway from the AP.

Your first URL request should be to a an unencrypted website (not https://). This works on my clients.

I would love to hear any configuration settings that will allow a redirect to work when the first URL is to an "https://" site.