I have a Sony eReader that allowed library downloads fine...before my computer crashed! Now I can get library books to my computer but the eReader doesn't show up as an option on Digital Editions. I have gone into my Adobe account and it doesn't accept my eReader serial number. I am getting the number from the sticker on the back of the reader. As I said, before the crash everything worked fine. Thank you.
You don't 'register' your ereader with Adobe. If the ereader isn't showing
up, you should go back and check its registration with SONY.