Have you tried to ask gearbest or others if they can find the product? I do not know what to say … if you have recently purchased with Paypal … open a dispute … explain and return the product. In other similar case I did so … paypal repayed shipping charges and just arrived the parcel have reimbursed. Unfortunately, if you do not have answers or solutions, and and shortcomings are technical or badly explained … there are no other solutions. Or hope to find the piece …