The dev has to look through a ton of posts every day so not following the format makes their job very difficult. Please don’t ignore obvious “This step is mandatory” warnings as it wastes time for the people trying to help you.
The ratings tag should be a 0-100 scale. Every 10 points is equal to one half-star, as you saw. I don’t think this app makes use of any odd values (e.g. 12 and 14 would both just be one half-star).