Im facing a problem with Google Maps Javascript API V3. The console log shows:
Google Maps API error: RefererDeniedMapError https://developers.google.
You can try the suggestion made in this issue.
"You could try to disable IP to domain name redirection (as you have now), and use your IP in the example above. It’s not a pure solution, but at least you can have a map on your website."
You can also check the answer here, if it can help you.
Then if any of the above solutions doesn't helps you, then I think you should consider the recommendation of MrUpsidown.