Mill Invisible Gen3 - Not exposing energy sensor

I’ve just bought a wifi enabled Mill Invisible Wifi Panel Heater.

It’s showing a sensor in the integration sensor.mill_heatergen4panel_current_power and I’ve checked the instructions here and the device_class is showing as power and the state_class is measurement, but it doesn’t appear in the energy dashboard for me to track the power.

Not sure what I’m doing wrong! Any ideas?