Garmin Express is not recognising my Garmin Zumo

I am trying to run Garmin Express on my Macbook Air (2025).

I installed Express on my machine, connected my Zumo, the Zumo automatically recognises the computer, but the Express is simply not seeing the Zumo to add it to the collection.

The software is up to date on both the Macbook and the Zumo and I'm using the original lead.

The Zumo came with a USB2 to Mini USB connector, so I have to plug into the Mac screen rather than directly into the machine (that shouldn't be an issue, right?).

Any help would be appreciated