I am unable to logon to Launchpad to do this weeks homework. In the past I have clicked on 'Find Your LaunchPad' and searched the book title, then selected the first "Macroeconomics 9th Edition". Then I type in the school and class credentials on the following page. In past homeworks, I have had to enter "Fall 2017" under the Academic Term menu in order to load the homework. "Fall 2017" is no longer an option in the dropdown menu. No results are returned when I enter everything and the Spring 2018 term. I'm just wondering what I should do from here. Please respond ASAP.