HomeKit All home Hubs all not responding?

[hehe299792458]

I have 4 Apple TVs as hubs for HomeKit. Since about 2 weeks ago, they have all been not responding. I already tried power cycling all of them as well as my Unifi Dream Machine SE & switch to no effect. Initially when I setup my Unifi network, I remember I had trouble with HomeKit devices because mDNS was disabled. I enabled that and it's been fine for the past 4 years (I checked and that setting remains enabled).

But many of the forum posts I read regarding this issue still point to the router as the culprit. Any thoughts? Thanks!

 

[dotme]

Two weeks is a long time to have unresponsive hubs. Are they unresponsive both when you're home, and out-of-home?

Any phantom hubs? (3 dots top right of Home App -> Home Settings -> Home Hubs & Bridges)

 

[andyw715]

DHCP/Static IP issue? Did your router reboot recently?