I'm also in the situation in which I've received a box to return my DVR but no label was provided. Originally, the email I received stated that the deadline to return equipment without penalty was August 6th. I've since received another message saying that I now need to return within 30 days of the termination of my service.
When I go to https://www.verizon.com/support/residential/equipment-return I also get that message others have received with no way to print a label:
We are unable to locate your order details. Please check if information was entered correctly. If you need additional help, contact us at 1.800.VERIZON (1.800.837.4966).
I am not able to get to a Verizon store or UPS store and would like a label so I can arrange for pick-up.
Please escalate to an agent - the Chat folks haven't been able to help.
Thank you!