I turned on location tracking to test it out and this popped up.
Warning: array_key_exists() expects parameter 2 to be array, boolean given in /data/58/2/123/123/2938123/user/3256422/htdocs/rhl/mobile/wp-content/plugins/wp-google-maps-gold/wp-google-maps-gold.php on line 2438
As far as I can tell, the only thing not working with it is the bubble on the marker tracked. It is blank.
Also it would be great if there was a list of tracked devices on the front page to click on to jump to it on the map.