In order to access Northwestern subscribed content using a mobile app you typically have to connect while on campus (your mobile device must be connected to the NU wireless network). While off campus or traveling, you should use the Northwestern VPN (virtual private network).
If you need help, consult the NUIT Support Center or call 847-491-4357 (1-HELP). Additional walk-in help may be found at the Library's Information Commons Desk and the Laptop ER in Norris.