Making Downloaded GPSFILEDEPOT topo maps appear on new laptop running Windows 11

I am unable to make downloaded topo maps from GPSFILEDEPOT appear on my Garmin Basecamp on my new desktop computer running Windows 11. All that I have is the Global map. My version of Basecamp is freshly downloaded today.

I download the same topo maps to my older Windows 10 machine today and they immediately appear in my map drop down menu on my older computer..