Basically I used a zip of ******* instead of ******* which for some reason caused DHL to fail to deliver (I've never had any problems with deliveries before). Pandawill.com support were completely incapable of tracking the package.
All they kept saying was "Check your local USPS", even after I'd been there in person and USPS had confirmed that they do not handle DHL packages. Then they said their shipping agency had taken the week off as vacation! A whole company on vacation for a whole week. That's great for the customer.
Finally now that it appears as though the package will be returned - BECAUSE I NEVER GOT THE CHANCE TO CORRECT THE ADDRESS BECAUSE THEY HAD NO IDEA WHERE THE PACKAGE WAS FOR > 1 MONTH - I have to pay $15 in delivery costs. Wtf. Avoid.