Google Classroom sends you notifications on your phone when students leave comments on their homework assignments. So, being a good teacher I rush to see what it says. Only the phone app will not display comments. And it's boxed up so you can't use the webapp on the phone. This is what I mean by thoughtless software. Why tell me about it if I can't see it? There are at least two dozen UI/design problems like this one. Thousands of schools PAY for this. Pay. With cash money!