The only thing I can think of is that I applied an update to Home Assistant and then it stopped working.
I’m not seeing any errors or notifications. HA seems happy. None of my Zigbee devices work, however.
I’m using the Nortek combo (Z-Wave + Zigbee) USB stick in my HA Blue (Raspberry Pi based).
Now that I think of it… I upgraded the HA software last night and rebooted and it was working last night and up until this morning when I had to shutdown HA and power it down. When it came up again my Zigbee devices weren’t working.