okay, so i have an adobe accound for my sony ereader but i can't remember the password i used to authorise the reader with. So i tried to press the "forgot password" button but i realised that the email adress was deleted so i can't get the password. So i got a adobe ID however because the reader is in the old address it's saying that it cannot add the ebooks because it's authorised to a different address. Anything you can do or is it more a sony problem?
You can't read books that are DRM protected to one Adobe ID with a different ID, so you want to get your old ID working again.
Can you remember the email address you used for the initial authorization, and do you still have access to emails there?
If so, go to the page https://www.adobe.com/uk/account/sign-in.adobedotcom.html and click 'trouble signing in'.
If you don't, try online chat at http://www.adobe.com/support/chat/ivrchat.html and they may be able to help with a new password (not sure what their rules are).
Then unregister the Sony (ctrl-shift-E while it is connected to ADE), restart ADE, and reregister the Sony back to the original Adobe ID.