Today a new update is out: Google Maps Markers for ZOO comes with new important param which makes the element compliant to the latest API version.
According to the statement:
As of June 22, 2016 Google Maps V3 no longer supports keyless access (any request that doesn't include an API key), so you need to get an API key for every domain which has never had a Google Map on it before.
We have added Google Maps API param in element configuration to make the product compliant to new technical requirements.
Feel free to download the latest release and update the element and do not forget to add your domain on Google Cloud Platform Console.
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