Iframe / embed issues

Hi, Im trying to embed a web page using iframe the iframe im trying to use is –

<iframe src="https://www.google.com/maps/d/viewer?mid=1hn8C_tzbCYYdxJEou5h5Paiczx2DZ3L_&ll=54.31453436144874%2C-2.3637175500000467&z=6" width="100%" height="600"></iframe>

but this just returns an error. changing the SRC to “URL” works but will not work with any other website.
The map is goggle my map that is set to share with anyone with a link. I have installed “iframe” plugin and both sites are HTTPS.
Any ideas why Iframe is not working with my map page or any other website ?
Thanks Sean

• This topic was modified 5 years, 11 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Everything else WordPress topic

The page I need help with: [log in to see the link]