https://search.google.com/structured-data/testing-tool#url=https%3A%2F%2Fcobertec.com%2Fservicios%2Fcontrol-horario-laboral%2F
As seen in the link above (see the errors in the test tool), BlogPosting doesn’t work with Aggregate ratings anymore since Google has changed the rich snippets criteria.
Similarly CreativeWork and Article also don’t work anymore and give the same error.
This rich-snippets issue & Google change is affecting all the popular rating stars plugins – YASR, KK Star ratings, GD Rating System and Rate my Post.
As per the Google webmasters posting, ratings will be displayed only for a specific set of schemas.
https://webmasters.googleblog.com/2019/09/making-review-rich-results-more-helpful.html
So, for the ratings plugins to work, they will have to allow selection of specific schema types for each type of post; and allow additional information to be plugged in.
For example, in my site, I have general articles and also specific posts that are selling some courses. Visitors / Users have an option of voting on all the pages and everything was using the ‘CreativeWork’ schema.
Now, that stars will not be visible for ‘CreativeWork’, I will need to segregate all posts into ‘Article’ and ‘Course’ categories.
‘Article’ may still have the star ratings, but they will not be visible in rich snippets. Whereas the courses will need to have ‘Course’ schema. If ‘Course’ is used, Google will require additional details to be available; such as ‘Provider’, ‘Description’ etc.
So, for any star rating plugin to be useful, it should allow more post level control.