The check box to return my rental book is not there?

Different reasons why the check box is not available:

•      Your rental is past the rental return due date.
•      We have charged the full non-return rental fee and the book is now yours to keep.
•      You have already printed out the prepaid label we provided for you.
•      When you placed your order, the shipping address was incorrect (this will prevent our automatic system from creating a prepaid label and/or generating an order receipt)