I have been using the VFRmap that is downloaded from GitHub since I got MSFS when it came out. A month or so ago the overlay for Navigation Data has not been working. I can’t find any information anywhere about this. I am thinking that I may be the only person still using this addon. Is it dead and not going to be fixed? Is anyone else in MSFS world using this map?
Topic moved into 3rd Party > Tools & Utilities 
Not sure if this is your issue (looking at open issues on their GitHub)
There are 2 other posts stating the display data is no longer working, so looks like you are not alone.
I downloaded Little NavMap and figured out how to simplify it so I am going to forgo VFRMap and switch to Little NavMap.