all matter devices gone after third nest added

[Tamira]

Hey everyone,

I've just lost all my matter devices over night after I added my third Nest Display to the network.

I'm using the Nest(s) as thread border routers and link the devices to Home Assistent after setting them up with Google Home.

When I added the second nest, I've lost (offline) 2 of the devices and had to re-pair them. But now, all decides are completely gone (not just offline) from Google Home, and Home Assistant reports them as N/A, probably meaning the TBR is not giving it anything.

Is there any way to debug what the Nests are doing? Why the devices are gone and how to restore them? (I've manually re-added 2 Nanoleaf, but I'd like to avoid running around the house and opening up the wiring for the other 8 ) 😎

Any ideas?

[Tamira]

Update: I found my devices - another home with the same name but with only media-devices existed and was selected.

All but one light are unavailable though. Is that something inherent to thread/matter that devices leave/get confused when another thread border router joins the network? Shouldn't be, right?

What is going on?

[toslut95]

I have a support case against MS about that. All my Thread devices keep failing after adding second Nest hub.