Here is the message I get when I want to authorize my computer to download a book in my Kobo: "You are allowed to one authorization to this computer under the condition not to use a ID Adobe already received for an other computer or mobile per. Please try again. My e-mail address is: firstname.lastname@example.org. Is it possible to reset my activation or to merge the actual e-mail address with other e-mail addressed I forgot in time. My adobe software is Acrobat Reader. I have Windows 7.
Start Digital Edition.
Press ctrl + shift + d (windows) or cmd + shift + d (macintosh)
Accept that should remove.
Then enter Data under help > authorize Computer.