Deleting libraries and uninstalling and reinstalling will not change the competer's AdobeID authorization, and so will not resolve any issues.
Have you tried the suggestions above:
Try completely removing any authorization using ctrl-shift-D to ADE (cmd-shift-D if on Mac).
Restart ADE, and then reauthorize with your old Adobe ID.
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You can try Adobe Live Chat: http://www.adobe.com/support/chat/ivrchat.html, but I doubt they will help very much.
Their attitude is that as ADE is free (even though an essential part of a service for which Adobe receives income form licencees) they have no obligation to support it.
