Schema not working properly when using the plugin

I have sites without this plugin and the schema for reviews is just fine, with this plugin they are not working properly. The problem seems to only be on one product unless Google hasn’t crawled the rest of the products with reviews. The ratingValue seems to be the item missing even though there is a review.

Here’s the error from Google’s schema checker:

https://search.google.com/test/rich-results/result?id=mECT63bTSiJMsKoO-GISIQ

The URL is also on that link.