Okay, I think I know what you mean. In the update ratings form you can’t directly change rating. Instead you need to change “Number of Votes” and “Sum of Ratings”. Based on these two fields the plugin will calculate average rating.
For example:
Number of Votes = 10
Sum of Ratings = 50
Will give an average rating of 5 (50/10 = 5).
The plugin will not allow you to create a rating higher than 5 or lower than 1 as such rating can’t exist. If you input “Number of Votes” 0 and “Sum of Ratings” 0 the plugin will show NaN as average rating but only in the metabox which is seen only to the author of the post. In the front end it will show that this post hasn’t been rated yet.
Please let me know if this explanation helped. If you like the plugin please also leave a review ??
Blaz