Hmm, the shuttles should come out when you turn to “easy” not “pro”. “Pro“ recesses them into the yoyo- screws them into the yoyo away from the string to make the yoyo less responsive. "Easy pushes them out of the yoyo halves, toward the string to make the yoyo more responsive, comes back with an easy tug.
Try turning the dial all the way to easy, and then back towards pro a bit. Then you should be able to snap the shuttles back in, and turn the dial toward easy to pull the shuttles back into position. Make sure when you snap them in, that you get each prong to snap in the same amount.
GL!