Ive been working for the past few days on figuring out why NYCE devices will not join Hubitat C8 networks. I even tested joins on openHAB using a Sonoff E series dongle. No beuno...
I emailed NYCE support and received an email within an hour stating that their devices will not work on Zigbee 3.0 networks, full stop, no resolution, thank you very much.
Owing to this i will likely remove all their products from our compatability list until further notice.
To further clarify, this is currently an issue of these devices joining a zigbee 3.0 compliant network. The devices will work correctly if they were migrated from a previous zigbee network running on an older Hubitat hub.
