Figured out why my "Treat as" dialog boxes in the server config window were empty. Went ahead and assigned doors, motion sensors, switches. All these changes showed right up in iOS Home, BUT every single device is non-responsive.
Reloaded the plugin. Same.
Disabled the plugin, waited for the HBB server to say it was up. Same.
Last time, I had to delete my Home from the Home App to fix this. Hope I don't have to do it again!