Fix-repair those devices with ? in the route :
- first those ROUTERs
- then 2nd END DEVICES
Is it possible that you are fully turning off (without power) those Zigbee, which are routers ? If so, try to avoid it.
After repairing (not sure there is maintenance option in HP19, simply try to add existing devices WITHOUT removing them - it will tell you that it’s already added and this means success), restart your Homey.
It should help stabilizing your Zigbee network, ? shall disappear from the Zigbee dev view and you shall be able to add more devices, however note that you have not build your Zigbee in recommended way - first adding routers, then end devices. If steps above will not help, full rebuild of your Homey Zigbee network might be required.
