Google Business Reviews Error Notice! Read Below Steps Carefully :
1. Check your API key and PLACE id. May be it is not right. Make sure it is correct one.
2. This message commonly shows when api key is exceeded daily request quota for this API or there is no active billing account for this API. Because according to Google there is a limit for free API key. If it exceeds they ask for billing.
3. To know more about Google Pricing , Check here : Google Pricing
4. You can create your Google API key here
5. Must use a right PlaceID. Get PlaceID here
6. One important thing, Don't forget to add billing account to Google. Must check what Google says here
7. If you still find issue , then check first if your Business registered with Google or not. Read more about it here
8.Still find issue, then contact developer : firstname.lastname@example.org