Google Maps media shortcode - no way

I was happy to find media shortcodes built into X, among them two different ways to add a Google Map.
As I filled in my latitude and longitude and saved, though, nothing happened. I got a message saying go to the java console (of which I know exactly zero).
Well, ordinary HTML must come to rescue, I thought (once again).
But ordinary HTML also did not do the job, and I got this java blabla again.

Can I - You - we - do something to allow ordinary HTML to work in X-built pages?

The html-code I tried to apply is put inside a iframe src code and looks like this:

src="//www.google.dk/maps/place?q=Savsvinget+4,+2970+Hørsholm &zoom=6 &key=xxxxxthis-is-my-google-api-keyxxxxx"

Hello There,

Thanks for writing in! Please make sure that your server allows iframe content viewing. Maybe X Frame Options is disabled in your site. To know more about X Frame Options, please check this out:


Hope this helps.