Didn't find any issues with HTTPS setup, so fire away. Let's call it an extended beta.
To set up HTTPS, go to http://your.hubs.ip.here/hub/advanced/certificate, copy/paste certificate/private key and save. Once saved, reboot the hub for the setting to take effect.
There's an option of SSL only on the screen. I suggest testing HTTPS connection before turning it on.
If something doesn't work, you can disable SSL by going directly to http://your.hubs.ip.here/hub/advanced/disablessl. You should be able to access the UI using plain HTTP right away.
If that doesn't work for some reason, the next option is soft reset in diagnostics tool, followed by reboot, followed by backup restore. All HTTPS settings are stored in the database.
