kml file not working in demo site

Hi,

I uploaded one kml file to your demo site (https://demo.corejoomla.com/tracks.html). When I check the map, it show only the end point, nothing more. I expect to saw all the road etc. I also test the same file on gpsvisualizer.com and it works fine.

Any suggestions what could be the problem? I'm interested to buy the license, but first I would like to check if it is working fine...

Check on demo site upload Slatna or S2...

Regards, Peter