There are few jquery error on that page, but the most important preventing the map from working is:
You have included the Google Maps API multiple times on this page. This may cause unexpected errors.
https://maps.gstatic.com/maps-api-v3/api/js/20/6/main.js
Line 60
This could be the theme or plugin adding the Gmap API. Disable whatever option is responsible for this and the map will work again. If you don’t know how to find out, you could start by disabling all non GD Plugins and see if the problem goes away, than activate them back one by one to find the culprit.
Remember to clear your browser cache between each test.
If the problem doesn’t go away, than the culprit is the theme and there could be an option or a php snippet to unenqueue the script. I’m sure the theme author can point you in the right direction if needed.
Let us know,
Thanks