They do like to see a track record but they give new shoppers a chance. Their high-reimbursement shops are in great demand, though, and, unless you are in an isolated area of few shoppers, they will have many, many applications for the shops. If the scheduler has a choice of applications from 5 or 6 long-time shoppers, it may take a while to get assigned one of these shops, especially if you have not completed any others for them. Keep trying. Eventually you will get assigned one.