I'm sure they'd prefer to receive notifications from their university on WhateverComesAfterSignalBecauseImOldAndDontKnow, but I imagine that SMS is the 2nd best thing (and probably still generates eye-rolling about the university being old fashioned).

But then you're stuck logging into the payment portal and filling out the form information with your phone, which is my own personal hell.

Oh, I'm with you. I'd much prefer to pull this up on a real computer so I can efficiently fill things in. I've adapted to typing on glass with my thumbs, but I'm not very good at it.