I was referred here after positing this problem Google's forum:
https://support.google.com/maps/thread/10640635?hl=en
I am at the point now where I have a new API key, have billing enabled, and still can't enable GeoCoding due to grayed out box that will never render right no matter how many times I reload. Whenever I do a simple map using the Maps JavaScript API I get an error saying that I can't display it properly and can only use it for development purposes even though that API is enabled.