[Plugin: Smart Map] No error, but no map : /

Hi there,
as I wrote, I have set the short code but nothing happens: no error, no map…
What should be?
Tks in advance,

Here a sample: http://www.herramientashop.es/wpbdm-directory/reyes-design

http://wordpress.org/extend/plugins/smart-map/