You are actually able to claim the codes manually through some simple html scripting:
- In chrome or firefox goto
http://live.playstation.com/ and press F12
- press ctrl+f in the elements tab and search for quest-wrapper
- all 11 "quests" will be displayed in the form of classes and show their current status ("quest-wrapper [status]"). Now, change all or the ones needed to "quest-wrapper completed"
- The page should update in real time after editing and pressing enter and a "Claim Your Prize" button should appear on the quests you edited.
Worked for me. It even got me a second, working, code for the PSX Collage theme. It's limited to 1 code on each account for the other quests though..