How to get authorization?

1)

Was the initial authorization with a 'standard' Adobe ID authorization, or do EBSCO have their own separate authorization?

If it is a searpate authorization, I am afraid I can't help.

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For a standard Adobe authorization it sometimes gets semi-authorized and all sorts of odd things happen. Try

1. completely deauthorizing (ctrl-shift-D to ADE,  cmd-shift-D on a Mac),
2. restarting ADE,
3. authorizing again using menu/Library/Authorize Computer
4. then trying to read a book.

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2) various possibilities

Did you ever authorize the Nook?

While plugged in by USB, and with ADE properly authorized to your Adobe ID menu/Library/Authorize Device.

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If the Nook has been authorized that can get confused as well. Similar to above

With Nook plugged in;

1. completely deauthorizing the Nook (ctrl-shift-E to ADE,  cmd-shift-E on a Mac),
2. restarting ADE,
3. authorizing Nook again again using menu/Library/Authorize Device
4. copy a book across
5. and try reading it on the Nook.

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There is an even more extreme version of deauthorizing the Nook when things are confused.  Only do  this if the above doesn't work.

1. Using a file manager such as Wundows Explorer or Mac Finder
2. make sure you can see hidden files and folders
3. if there is a folder with a name link '.adobe-digital-editions' on the Nook, rename it
   (or back it up to computer and delete it)
4. start ADE and authorize the Nook.

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There are bugs in ADE2.0 that mean it won't work with some devices.  Try 1.7.2 instead.

Yhat might help with both 1 and 2.

Version 1.7.2, it is a little difficult to find, available on Adobe site for Windows and for Mac.

http://helpx.adobe.com/digital-editions/kb/cant-install-digital-editions.html

The forum software is sometimes corrupting the link above.  There shouldn't be a blank in 'editio ns.html'.  The following redirects to the same page: http://tinyurl.com/diged172