KML files no longer display

Hi
I can't remember your site with map.
Can you post link to your map page and admin panel

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Hi
I did many tests on my and your sites.

My site:
I checked with my KML - it works
After that I downloaded your KML file, and upload to my site.
All work as expected.
I set link to your site - doesn't work

Your site:
I created Test map and Test KML layer
And I set link to my site and my KML - works
Set to my site and your KML - works
Set to your site KML - doesn't work

I think there is problem to access to your files from Google Maps API

I leave Test Map and Test KML layer (to my site) on your site and you can check, that all works as expected.