Google has introduced some new changes to their Maps platform APIs, and specifically they have made an adjustment to the way that GeoCoding works.
If you are receiving an error: GeoCode – Request Denied
It probably means you need to update your API project and add the GeoCoding API. This doesn’t take long, and is probably easier than getting a new key.
Open the Google Cloud Console
Open the project that you use on the site
Click on APIs
Search for the GeoCoding Service
Add the API to the project
Go back to your site and verify that the error doesn’t come back, and let us know in a new topic if you run into trouble.
You may see this message in the Chrome console
You can open up the Google API console and make sure GeoCoding Services API is added to the project. If it isn’t just add it.