There may be several reasons why the map is not displaying correctly. Here are some areas to troubleshoot:
- The first location under Design › Theme Settings › 14.1 Locations must have the latitude and longitude values
- The API key has to be secured and restricted to your store's domain (see detailed instructions here)
- You may have reached your API limit. Check to make sure you have enabled billing in your Google Cloud account.
- Make sure you copied the full API key from Google Cloud console
If none of these fix the problem, please submit a ticket and include the URL to your about & locations page.