Ecobee Smart thermostat will not pair properly with HA HomeKit controller

So I have 8 Ecobee thermostats. 6 of them are the Smart Thermostat with Voice control. I had 6 of them connected but at some point the one in the office started having difficulty connecting. So I unpaired it, restarted it and connected it back again. But then after installing this months version of HA it would not connect again.

I know it has wireless connectivity, I can see it listed in my Unifi controller as a device. There are other Ecobee stats on the same wireless network that are connected.

Twice I got a message on the Ecobee stat after typing in the number that it was connected to the HomeKit controller and I touch ok and the stat things its connected but HA just keeps showing me a spinning circle. I let it sit at least 30 minutes and it never registered it was connected.

HA is seeing it durring its discovery process but it never seams to be able to connect to it.

As of this posting I’m on the latest HA version.

Does anyone have any thoughts on how I can get this one stat to pair?

Please and thanks…