Google review & schema

Hi !

I want to add the review schéma on my website accoring to the Google Place Rating.
So I followed those steps to add the google place review bagde on my page : https://structured-data-for-wp.com/docs/article/how-to-display-reviews-with-collection-feature/

And then I added the shortcode here :
https://www.la-cordee.net/cordee/villeurbanne/republique-villeurbanne/

But I get reviewCount = 1 and ratingValue = 1 when I test it with google test tool :
https://search.google.com/structured-data/testing-tool/u/0/?hl=fr#url=https%3A%2F%2Fwww.la-cordee.net%2Fcordee%2Fvilleurbanne%2Frepublique-villeurbanne%2F

I’don’t undertand why.

Thank for your help !

Diane