Plea to split companion app in 2 separate apps, one front end, one backend (and with MQTT/REST support)

[HasQT (Has)]

Fully Kiosk: Launch local Android apps from your HA dashboard

Fully Kiosk is a great solution for wall-mounted tablets running Lovelace dashboards. Alongside Home Assistant, it can be useful to run local Android apps, for example to control a device which is not yet integrated into Home Assistant. There are a few different methods of launching local Android apps from a Lovelace dashboard running in Fully Kiosk. You can use Android intents, the Fully Kiosk JavaScript API or the Fully Kiosk REST API. JavaScript and REST API docs are here. Both APIs are Plu…

Sort of sounds like this might be what you want for your wall tablets. Has some interesting ways of turning the screen on etc.

Sounds like you have the wrong addresses set for a local tablet too, or no local address set in the companion app.