Now I see what you mean. We'll add the name. Please always specify which type of rating you mean. wpDiscuz 7 has two types of ratings, standalone post rating and the rating based on comment rating fields. So you can have post rating without comment fields and it works fine on our demo page.
And please note, that this option is related to the standalone rating to the comment field rating:
You're currently using the comment fieldrating, and if you have more than one rating field it generates an Average Rating tags for Google. These tags have "Average Rating" name (we'll add the name). So it can't use your comment field rating names, because they are multiple, it should have one general name for all. Google doesn't accept multiple rating for one post.
You're currently using the comment fieldrating, and if you have more than one rating field it generates an Average Rating tags for Google. These tags have "Average Rating" name (we'll add the name).