There are three things you should do:
1) Look outside your home for the tickets very closely (FedEx personnel sometimes hide tickets in unseen areas so as to prevent any package theft).
2) Call FedEx (1-800-463-3339) with your tracking number to ask for more information (since FedEx was the last one possessed had your tickets).
3) Call our customer service number (1.866.459.9233) to see if there are alternative ways for you to re-access the tickets (no promises here, but it’s certainly worth a shot!)