You need to get an API key from here then click “Get Started” (upper right) and add a payment method (this is used if your site goes past their free usage threshold, which is very high), then add the key via WordPress Admin > Real Estate 7 Options > Google Maps.
If you’ve already set up Google Maps and are seeing issues please see the Google Maps Aren’t Working article in our knowledge base.
Only the following three APIs need to be enabled:
- Geocoding API
- Places API
Also, make sure your API key is locked to your sites URL via your Google Platform account. Check out the screenshot below or for more information please see https://productforums.google.com/forum/#!topic/maps/Lcx4uBRl7uA