After the 3rd e-mail from the amazon "account specialist," I finally learned I do not have access to any of my digital content even though I had paid for it myself. I asked if I could download files of the books that I had purchased, but to no avail. It looks like it's really true that even if you purchased the item, it's not really yours.
I also asked regarding some of my amazon mp3s, apps, and videos I had purchased from their stores. The account specialist told me that none of that content is accessible anymore. Brilliant.