Google Maps is not loaded correctly

I've put the path administrator of the domain in "Accept requests from these HTTP referrers (websites)" of Google APIs
Now I wait 5 minutes for see if it work displaying the map in the backend
It's right?

I checked your site page, and you have one space in version number, before 3. Remove it, probably it can cause error

Hi,
I had remouved the space but in the backend the map display "
Oops! Something went wrong.
This page didn't load Google Maps correctly. See the JavaScript console for technical details."

The diference now is the language of the error before was in Italian now in English

Probably you didn't define API key correctly. For example you didn't add your domain into key definition

Hi Dima,
I try to explain as I'm doing about API Key

Which API are you using? a select Google Maps JavaScript API
Where will you be calling the API from) Web browser (Javascript)
After proceed and in the credentials I put "Accept request from these HTTP referes /website) htttp://mydomain.it/ and htttp://mydomain.it/ administrator/
Of course i put the key in to ZH options and latitude an longitude and the same coordinate in the map.
Google Maps API version
I've select Google Maps API version 3

Is right?

Now I can see map on your site page