my card expired, and all of my books, which I paid for, wouldn't open.

updated cc and had to redo download the books. Seems nutty.

seems totally unfair, if you've bought the books already, shouldn't make any difference

Yeah, that's just.... at least you didn't have to rebuy?

Just really annoying drm.

but if someone just bought books to read on their phone, and didn't keep a permanent credit card, wouldn't this make them useless?