Unfortunately Homey has not been very stable since purchase and Support have been assisting and I have been following their suggestions.
Homey is frequently unavailable/offline or just runs very slowly.
It has substantially improved by changing out the power supply as advised, with an iPad power supply.
I built the zwave network the same as my zigbee network, first by adding 20 mains powered devices that also double as relays, positioning increasingly further from Homey until the extremities of my home are covered. Once stable add battery devices.
I was experiencing intermittent issues with zwave devices I was advised on the Homey Forum that the issue was related to the zwave devices being added as secure by default. To fix the problem I had to remove zwave devices off Homey and re-add them using a community app that forces the zwave devices unsecured.
I suspect the biggest issue that is causing Homey problems is the Athom Hue app, it was routinely hitting 80-90 mb of memory and was causing Homey to crash often.
Homey support identified the issue, but as so few people are experiencing the issue there is little interest in prioritising the issue. The work around is to restart the Hue app every 6 hours.
Unfortunately every light in my house is Hue, about 90 of them, all my 25 sensors are Hue sensors, distributed between two hubs. I really don’t want to have to replace them and they work very very well and are extremely reliable.
Homey is great with Zappi, Victron, Shelly, Aqara and doing well as long as I don’t over tax it, and it manages BMS, car charging, an outdoor floodlight and the blinds.
I originally planned on using Homey as the main hub for house, but in order to get it stable I have not got past the basic roll out of mains powered devices, and I am taking the zwave devices off it to reduce loading so it can focus on the things it is doing really well.
I am leaning now towards running targeted hubs, Hue, Tado, Homey, Hubitat, HA, MQTT zigbee and having them do what they do best and put Node Red over the top.