You've created your map and published it, however, it doesn't display on your site or page.
Normally, the map will display after you have clicked "Publish" and placed the Shortcode on your site or page. Some instances were reported, however, in which only a blank map appears on the front-end.
Ensure placing the correct Shortcode on the site or page.
Log out of WordPress and log back in.
In many cases, this solves the problem and the map will then behave as expected.