Thanks, Plurple.
BTW: I have used two different laptop computers and both had the SAME problem.
I need the details, not a one word suggestion that did not get me where I need to go.
I tried to reset to Defaults and that DID NOT work.
There is options to swap from small to large, add white circles beneath the numbers and then map opacity. or you can just click reset to default and it will set them back to normal or no opacity but if you have moved them around it will also mess that up

this is unclear to me; what do I want in each of these? I tried a few changes, and tried to refresh the Screen and NO change to improve and see the map. Small map allows me to see faint outline of map; that helps, but NOT enough. I have tried other changes and, again, no map in view.
I tried MORE and here is what worked, for me, anyway:
Toggle Color Codes
Map Size Small Change size of map
Map Opacity 90% Fade map for ease of viewing
Circle Whiteness 0% Brighten circles on armies for ease of viewing
Text Map Off Text map appears on the Map Panel
AND why just that ONE Map, Classic? any idea, plurple?