Clever Sign In using username/password is supported for administrators, teachers, students on iOS, Android and the web. Clever Badges Sign In (scan QR code) is supported on iOS and the web for any roles the school has turned it ON for. Usually this is for younger students, but admins control this setting in Clever and can allow it for other roles.
Unfortunately, Clever Badge log in isn't supported on Android mobile or tablet devices.
Students can also log in to Seesaw using their email address and password, or the Seesaw Class QR code.