Enter kk star ratings settings click on stars
Scroll down to find the star images. You’ll see “gray star”, “yellow star” and “orange star”. Once you find this area, click the red “X” in the lower right corner of the box. You’ll do this to remove the current stars from the system. Do this on all three stars.
Click the ‘SAVE’ button at the top of the screen.
Reload again star ratings settings. Go somewhere else on your page, like click the ‘Appearance’ tab or ‘Settings’, etc… Then click back on the ‘kk Star Ratings’ settings like you did before, click the ‘STARS’ tab and you should notice, the default stars are magically back!