This doesn't work for me either. They are on the same LAN (hub on 192.168.1.3 and Homekit on 192.168.68.115) I am on version 2.3.4.123. I have ensured that my appleTV is at the latest level as well. It finds my Ecobee without even trying...
I'm having the same issue "accessory not found" / on Habitat version 2.3.4.123, Homekit side Home Hub & Bridge is Home Pod mini (software version 16.2)...
Well... just updated to Hubitat firmware update 2.3.4.127 released this morning and it's fixed my "accessory not found" issue... Hubitat was visible, I was able to connect it and all the devices. Everything is working great.. hopefully everyone else has the same experience.
I just today discovered all of my devices unresponsive and, after wiping the Home app on my iPhone, am running into the "accessory not found" when trying to repair with Homekit v2.
I updated to a C8 a few months ago. I have not yet been able to successfully add the HomeKit integration. I am at release 2.3.6.141 (Current as of this posting). I still get the accessory not found.
I have done everything. Nuclear as well. Nuclear, reboot, remove the app, then reboot and then add the app again. Never any success.
Of note, I am able to run the homebridge v2 without a single issue. It still works fine. I really do not like relying on the homebridge solution as I want the Habitat to simply work directly with HomeKit.
Any other solutions?
I have noted that even when I do the Nuclear option, the QR code does not change until I actually reboot the habitat. Isn't it supposed to change immediately without a reboot of habitat?