"add Matter Device" not appearing in Mac App

I have the Home Assistant OS running on a Raspberry Pi 4, and have installed the Matter integration, when I go to add my matter device running on HomeKit (Eve Energy - working fine now for 2 months) the “add Matter Device” option is not availabl.

Matter Server 4.90
Home Assistant 2023.10.5
Supervisor 2023.10.0
Operating System 11.0
Frontend 20231005.0 - latest