SONOFF POWR3 Switch Configuration - Help!

This is my first post and I am new to Home Assistant and hope that somebody can help me.

I have purchased a SONOFF POWR3 switch for my 3kW immersion heater. I would like turn it on and off from my Home Assistant dashboard.

I have installed HACS and installed the AlexxIT SONOFF integration.

My POWR3 switch has been configured and is working via the eWeeLink app.

I would like to use this device via the local LAN and via the Home Assistant dashboard.

On the System Health page is shows the following: -

Sonoff

Version 3.6.0 (8dd8af9)
Cloud devices online 0 / 0
Local devices online 0 / 1

So as far as I can see the integration can recognise that the switch is online.

What do I need to do now in order to add a switch to my dashboard to operate this device?

Please can somebody help me?

Regards

Steve