I received the same error when adding my Rachio 3 to HomeKit. My solution was to use a Homebridge Plugin. It required forwarding a port in my router but installed and works flawlessly in HomeKit.
I received the same error when adding my Rachio 3 to HomeKit. My solution was to use a Homebridge Plugin. It required forwarding a port in my router but installed and works flawlessly in HomeKit.