Half of the top map is missing

Hi, I've just realised I have an issue with my Fenix 5+..

It came with bundled Topo Europe maps.

Somehow I seem to have lost half of the map..I only see TopoActive Europe 2019.20, North East in my map list.

I'm sure I did, and should, also have access to the South West portion of the map.

I've tried "Reinstall Map" from within Garmin Express, this doesn't seem to help. I also just updated to 2019.20 from within Express, but again, only half the map is available to choose from.

Any ideas please?

Strangely, this seems also to have happened with another Garmin device, 66i for me.