Dear Victor,
since we have made an update to the newest version 4.3.7 (from an older version 3.5.2) we lost the average rating in Google Search for our reviews. I try to give an example, please take a look on both example pictures (in german). Or use Google with the search "LifePoints avis - SondageRemunereSerieux.com" and you will see our site with stars and 4 voting results. Now, use the older version with the search "LifePoints Erfahrungen - umfragen-portal.com" and you will see the average ranking, too.
Which configuration we must change in your extension to get the average ranking in Google Search back. I have tried many features, but without better result.
Thank you and kind regards, Evgenia