Module doesn't show all path

In my website (www.capracottatracking.com/) I added ZH Google Map module for show various kml paths (Now there are 33 Kml files) divided in various category. But when I active 0m-100m category and 100m-400m Category I can only see the first category I actived.
What I can do for show all categories togheter?

Hi

I didn't find page with map.

If you mean, you create different KML files (by paths) with different categories (or groups) and belongs different maps, and want to show it on the other map by module - you can't do it.
Now I allow to display placemarks by Category List (Group etc).
I'll think of how more easy to enable show it too.

The map is the first that you can find on the homepage of the italian version of the website (www.capracottatracking.com/index.php/it/). In this map I've created 3 different categories. On the first category there are 14 kml files (by path) on the second category there are 16 kml files (by path) on the third category there is only one kml file (by path). Mi question is why I can see only the first and third category thogeter and not all three category thogeter? I'm doing something wrong?

Aha.
I've checked it.
When you click 1+3 - all OK
but 1+2 or 2+3 - you've got the error - check your browser console
"400 Bad Request"

You should check your KML file (is it OK and satisfy Google's requirements), or search the web for this error.

Thanks for your support. I Think I've solved the problem in another way... I created only one kml file for 100m-400m which contain all 17 old kml file.