Hi Alex,
I had the exact same issue with the 'OpenTopoMap' loading undetailed and not seeing any more when zoomed in, since about a week now.
Have two PCs here, one work, one gaming...
OTM worked fine on one, noy anymore on the other. The gaming computer had the OTM issue in LNM.
Looked around on Internet, came across this post, cleared Windows Register, re-installed LNM, but couldn't find a solution.
A brainwave recalled updating Windows once which helped in fixing a very different issue a few years back with DCS.
This time fixed it too by updating Windows on my gaming computer, and now LNM shows the OTM just fine, and when zoomed in it shows all the details again!!
Hope this helps someone else with this issue.
Am super happy with LNM, and am using it constantly when planning various legs of my MSFS2020 flight around the world in a helicopter.
Flying at 1.500' AGL, OTM in LNM is really handy for planning purposes!!
Am amazed at the capabilities LNM provides, what a great program!!👍
