Load the page in Chrome, click the F12 key and then click the Console tab. You’ll the following error message from Google:
Google Maps API error: RefererNotAllowedMapError
What this mean, when you setup the Browser Key, you set up the “Accept requests from the HTTP referrers.” option. This is good, you want to do this. But, the referrer you set up is being rejected by Google. You’ll need to adjust it so it is correct. As mentioned in the Get Google Maps API Keys docs, in the Create the Browser API Key section, I recommed the following referrer:
domain-name.com to your website address. The preceding
http:// and trailing
/* are important and should not be left off otherwise your Browser Key may not work because it will not be able to validate the referrer.
Hope that helps!