Hey there,
In order to create the API Key out, you need to create the key out at
https://console.developers.google.com in order to use their service.
- Google Static Maps API
- Google Maps JavaScript API
- Google Maps Geocoding API
- Google Maps Geolocation API
- Google Maps Embed API
Please search for the above APIs and click 'Enable' in API Libary.
Based on what I researched, Google requires users who use their API key to add a billing account in order to access the full set of services and increased usage limits.
You can enable it by going to 'Billing' in your navigation menu,
https://console.developers.google.com/billing.
You can insert your Google Map API Key at
Backend > EasyDiscuss > Settings > General > Locations.
If the issue still persists, perhaps you can provide us with your Backend access and Google access credentials so that we can have a further checking on this.