I am a DE student taking AMH 2010 and my professor doesn't use Launchpad. The DE bookstore didn't have the book so I had to go to East Campus. I had a voucher for only the code. I specifically told them that my professor does not use launchpad and they gave me the launchpad code anyways. The book my professor uses is published my Macmillan. I have a discussion, a quiz, and an essay due this week with no access to the book. What can I do?