Open Maps Widget for Google Maps settings to configure the Google Maps API key. The map can't work without it. This is a Google's rule that all sites must follow.
[*osm_map_v3 map_center="52.6138,5.4892" zoom="8" width="100%" height="450" file_list=",," type="OpenSeaMap" file_color_list="green,red,orange" control="scaleline" map_border="thin solid green" file_title="My boat trip,My second trip,My third trip" file_select_box="one" bckgrndimg="GDPR_bckgrnd.png" ]