…make sure that on your iOS device under Settings/Apps/Roomie Remote/Allow Roomie Remote To Access… to turn on the slider next to “Home Data”.
You must enable this for your HomeKit devices to synchronize with Roomie. Ask me how I know (after over an hour of !#%@!).
This may be something that everyone else knows, but hopefully it’s useful to at least one other person. I don’t think I saw this setting mentioned anywhere in the Sep 2024 User Guide, and I’m pretty sure I looked at each one of the 60+ times “HomeKit” appears in the Guide.
Net-Net, I’m glad that I can now see my HomeKit devices.