Is there a tutorial for setting up the Google API on this theme? I can't make it work.
Adding a Google Map to Dentalia is possible with SiteOrigin Google Maps widget.
Then you will need to add this API key into the Google Maps Widget settings.
Click on Plugins -> Siteorigin Widgets and search for Google Maps widget.
Click on the settings where you will be able to enter your Google Maps key:
There is an in-depth tutorial, with screenshots and video here: https://siteorigin.com/widgets-bundle/google-maps-widget/
Let us know if you need further assistance,