You seem to have a similar problem to what I had yesterday. Honestly I’m not entirely sure what solved the problem for me, but I did change the broker from Homey app to openHabian Mosquitto. I’d recommend doing that anyway to leave as much load as possible off of homey.
But sometimes it’s just best to restart from the beginning. Uninstall all apps and just go from there once more. I did that and it works great now