Is the situation about this Sonoff Zigbee App (community) has anything to do versus the Sonoff App (official) from StyraHem Sweden ?
Sonoff Appli pour Homey | Homey // GitHub - StyraHem/Homey.Sonoff.Zigbee: Sonoff Zigbee Devices
At least there is the source code, but the number of devices supported are pretty limited. Not sure why it is actually flagged as official
