The “is my home dead-is” is my thread
And the issues you are seeing looks like some of the issues you will have if there is bad connection to Homey. I had the same - Motion Alarms not clearing. Settings not sent to devices. On/Off commands not working.
Seems like Homey in 1.5.12 + have tuned their Z-Wave receiver to be overly sensitive maybe by lowering transmit power. That creates an un-balanced network as Z-Wave devices will fight with Homey about ownership of routes. Since Homey “listens” quite well but dont transmit as good - the imbalance will continue to impact Z-Wave network performance.
Try to go to https://developer.athom.com/tools/zwave and check your TX Errors - if there is a lot (>20% errors) you are in the same boat as me.
A pull the plug on Homey for 10min+ might help a bit and then leave it to settle. But pay attention to the routes between devices and see if it is logical. Mine are not as I have put in repeaters and due to Homey’s lousy Z-Wave performance (currently) most devices jumps OVER homey to get to a repeater - and then the repeater sends signal back to Homey.
So I hope Homey will adjust their signal Parameters - I have written support. So the best "send / receive " settings are balanced settings so send and receive distances are “close” then you get the best Mesh network and overall best network performance.
It is no different in Wi-Fi - sometimes you get a lot better performance by turning transmit power down (most set them to Max by default) - but if you tune the output down - receive sensitivity goes up - and when they are balanced to your environment - you get the best network performance overall.