Google map shortcode stopped working

We are running a child theme using Responz from Responz (URL: https://themify.me/themes/responz). We recently found that the Google Map shortcode no longer works. I am sending you an example age with the described problem: https://dev5.web.uri.edu/themetest/contact-us/map/
FYI, I have obtained an API key from https://developers.google.com/maps/documentation/javascript/get-api-key, then added the API key and pasted it in Dashboard-->URI Responsive > Settings > Google Maps page.
This has to be related to our Child Theme. Because if I switch to the parent Responz theme, the map shortcode feature works.
Could you please help? Thanks a lot.