Drone license and registration sent to wrong mailing address

So I recently bought my first drone, and ordered a license along with the registration labels. I recently moved in with my cousins, and thinking I knew their address, wrote it down for the shipping information. I guess I put one wrong number because I never received it, and don't know where it ended up. What do I do to recover this? via /r/drones https://ift.tt/2XaeNPc