Are you using Nads? That is green. Maybe you are putting on either too much OR too little. And if your hair is too short it won't grab. And you have to make sure you apply the cloth pad and rub it on well to press the wax into the cloth and your skin. Make sure you pull your skin tight.
I actually use this brand called "Parissa" from Target. I use the tub you heat up- it's not expensive and it's the best wax I've ever used personally
I also tried the wax on the strips already- pure crap- there is NO wax on them!