Just did pulled up a test award booking and this is the first line in the list of benefits --

"Redeposit fee coverage (if you cancel your trip up to 72 hours before departure pursuant to Delta's Award Ticket cancellation policy)"

The issue is DL's 72 hour no-redeposit rule (as mentioned above). Although I believe there are people here who have gotten in waived in certain cases (injury, illness, etc.).

If you click the Learn More link, you can also get a link to the full T&C's --
https://partner.allianztravelinsuran...01_01_P_V2.pdf