Hey there- I’ve been all over this issue with Medium. The fact that the referral program simply “doesn’t work” on mobile apps is so wrong, as I’d venture to guess a significant portion of viewers are on a phone. I have at least 2 individuals I know who signed up thru me that are not accounted for in my monthly payments. I’d like to believe this isn’t intentional on Medium’s part, but I’m having a hard time finding evidence to the contrary. Big time bummer.