Divi don’t have a option to pop up marker on load, but you can do it this way:
Open file divi\includes\builder\scripts\frontend-builder-scripts.js
find this:
google.maps.event.addListener(marker, 'click', function() {
if( infowindow_active ) {
infowindow_active.close();
}
infowindow_active = infowindow;
infowindow.open( $this_map_container.data('map'), marker );
});
}
});
}
and replace with this:
google.maps.event.addListener(marker, 'click', function() {
if( infowindow_active ) {
infowindow_active.close();
}
infowindow_active = infowindow;
infowindow.open( $this_map_container.data('map'), marker );
});
infowindow.open( $this_map_container.data('map'), marker );
}
});
}
now the map pin will be loaded open.
Just remember that this is core modification and you need to keep in mind when you update theme.