facebook reviews not showing

With facebook reviews I have around 39 reviews but the website shows around 20 that i added manually. I have written earlier too. I can see facebook reviews under reviews section of the app but it does not show on the website.  I opened the website in incognito window but same result. I removed the code and added the code again but with the same result. Please help me fix it. Its unfair that I pay for something and do not get what is promised.