Cannot download thread credentials to phone

Configuration Matter/Thread
1

First of all yes, I have read through a number of topics, tried a lot of stuff, but so far things don’t work.

I have a Ubiquity network, with 1 VLAN, Wifi & Ethernet are in the same VLAN.

I have a home assistant server on a Raspberry PI 5, booting from NVMe, freshly installed with a Home Assistant Connect ZBT-2.

I have installed a thread border router (#49F6), and I can see a ha-thread-d2e9 thread network, which is the preferred network, it has an icon that indicates that the network is used for android & IOS credentials.

I have an IPhone 17 pro with IOS 26, with the HA companion app.

When I go to Settings → Thread in the companion app, I see the thread network but I cannot download the credentials to my phone, I get the message “Failed to store credentials in keychain, error: Thread netwok credentials does not match with any of the active thread networks around.”

Home assistant server has IPV6 enable and I can ping it from my desktop machien over IPV6

When I look on the home assistant server in the Zeroconf browser I can see an entry for Home Assistant OpenThread Border Router #49F6, IP adresses inlcude the IPV4 addresses of the ethernet & wireless interfaces and the IPV6 address of the HA server.

I’m at a loss of what else I can check or do.

P.S. reason I have this freshly installed HA server is that I had trouble with the previous one with matter. I have an aqara Hub M3 and a number of aqara matter over wifi and matter over thread devices. The aqara matter devices were succesfully shared with the previous ha, but often disconnected, so I wanted to try a new HA and use matter without the aqara hub.
The hub is currently powered down.

2

The likely cause for this error is that the iPhone is not getting this same advertisement even though the HA Server is. You may need to download an iOS App that can also look for these advertisements to see if the iPhone is actually receiving them.

3

I downloaded such an app, called discovery.

And although it does see an _meshcop._udp. entry it does not see what’s in it.

Strange because it also sees _home-assistant._tcp and it does see the home assistant server.

4

I played around with setting on my Ubiquity network and suddenly I saw a lot more mDNS entries in the Discover app, one of which was the thread border router.

No clue what exactly I changed that made this happen.

But, I can now download thread credentials to Home Assistant.

Thanks for the help!!

5

Great! Glad it works

6

Oh and I could add an Aqara Door and Widnows Sensor P2, directly to HA.