It seems your iPhone/Pad has stored the Thread credentials of some other “MyHome” network, so when you send it to HA, it now shows up in HA as the top entry (i.e. MyHome1695430118).
As to how to fix it, I’m not sure. If you have some other iPhone/PAD that has the credentials of the Apple TV 4k, then use it to send to HA.
I found the solution. On my Mac, I selected the option „show invisible items“ in the Keychain and searched for Thread entries. I deleted all entries containing MyHome1695430118. After that, Home Assistant displayed the correct Thread network, which I was then able to set as the preferred network.
Any idea why the new network was created in the first place? I have the same issue. All of my devices were connected to a different Apple thread network, and then after a reboot I got a new network and all of my devices were no response. I was able to re-add the devices to HK. But I can’t seem to use the HA app to send the credentials for the new network. My iCloud keychain is storing the old ones.
Any idea how to edit the keychain if you don’t have a Mac computer. I have an iPhone and iPad but have found no solution.