Meross MSS426(UK) power extension lead

Hi, I am new to homey and have setup a homey self hosted server on a synology nas and was looking to add my Meross MSS426(UK) power extension lead but it doesn’t’ show up as a option when I use official app and it asks to scan codes etc, it doesn’t prompt for a username/pswd. The one I have says it has alexa, hey google, smart things and says Apple Homekit NOT compatible. When I set this up I simply added it to my wifi and that was it. However, I cannot add it to self hosted server. Does anyone know how I can add it at all? The model number doesn’t existing and selecting a UK power socket doesn’t work either. I’m in my current 30day trial so wanted to ensure I can add devices as needed before potentially going ahead and purchasing.

Thanks

Kev