I purchased some eBooks from Word.com.au and Koorong.com.au book stores, but when I try to download the ebooks into ADE I am greeted with the following error: "Document is licensed for a different user account". This error happens for every eBook I have purchased from these sites.
I contacted the websites in question, but they referred me to Adobe Live Support, who directed me to deauthorise and reauthorise my account, even to the point of signing in with a new Adobe ID. In the end Live Support directed me to these forums.
I've also tried uninstalling and re-installing ADE digital editions.