This kit contains a clip-on weight and weights with stickers on the backs. These weights all weigh the same, hence you need a kit.
Clip the weight onto center of one edge of blade. Turn fan on to see if this eliminates wobbling. If not, move the clip to the next blade and try again. Keep trying on each blade until balanced.
When you find the blade that accepts the weight by eliminating wobbling, remove the clip and add the stick-on weight to the center of that blade on the top unseen side.
It's fixed! You may need to add more than one weight in some cases.