API key not accepted with Google widget

Hi guys, I have an application in which I am using the Google widget with an API key.  With the API key I still get the message "For development purposes only" And in the Mendix modeler console I get the following error: " Google Maps JavaScript API warning: NoApiKeys https://developers.google.com/maps/documentation/javascript/error-messages#no-api-keys"  Does anyone know what is going wrong? Thanks for the help. Gr, Harrison    
1 answers

You probably know that Google changed its policy. Did you all the steps to update your developer account? See also the Guide for existing developers: https://cloud.google.com/maps-platform/user-guide/

My gut feeling is that you did not create a new API key and connected your credit card to your developer account.