Problem and suggestions

For some reason, only non-logged people can see the sliders of the feature “rate on comment”. Logged users see the title of the slider, and the bar, but not the moving ball or its value.

Example
http://mundoairsofter.com/blog/2015/11/review-flyye-dmap-aor1/

Also, it would be nice if we could choose a 1to5 star rating systems (Google snippet standard).

https://ww.wp.xz.cn/plugins/wp-product-review/