google maps is white in contact page

Hi, mi google maps is not active in contact page. It's show a white rectangle.
How can I solve it, please?
Thanks

(If you need the website, I can give you).

Hi!
Could you give us the URL of your website, please.

My site:
http://reunionsciencia.es/wgswp/contactar/

I introduce maps as insert code from google maps, but the maps of the theme doesn't work (you can see a white rectangle).
Thanks.

Hi!
Please contact us via support@smthemes.com. We need some order information to fix it.