iPhone Case Program app not working

I looked around but I couldn't find any one else posting about this problem. I installed the iPhone Case Program app on my iPhone and entered my iTunes password when it asked, but then it said "We're unable to process your request at this time. Please try again later", or something similar. I assumed it was simply because I had tried doing it right away that maybe their servers were being pounded, but I have kept trying for the last few days and it still doesn't work. I've seen a ton of other people who seem to have got their case orders through with no problem.

Did anyone else experience this and know what the problem is? It's weird.