Embedded gmaps with iframe

hello,

after not having the possibility to create a billing account with google to use their API and maps in our non-comercial website we made de decission of including enbedded maps with an iframe in the event notes field.

When we insert the code in the workpress admin panel works properly and the location is shown. However when we insert the iframe in the front end web page the location is not shown.

Could you please give us support with this issue?

Thanks