You might check in both using the "Sign up with ClassLink" choice to register to the two ClassLink and Backpack, or by using the "Sign up to Backpack Only" solution and coming into your district username/e-mail and password. To inquire what your district email and password are, be sure to https://blogaboutfashion01121.madmouseblog.com/14211736/little-known-facts-about-backpacks