The work computer I have doesn't require an ID on adobe digital. However, when I go to add the book to my ipad via the millenium ereader it prompts me to log into adobe stating, "this item was originally downloaded with a different user account or Adobe ID. To continue, please add that account." The problem is I didn't log into any account on my work computer? Please help! I'd rather access the book on my ipad than on the work computer.