It's very silly that they didn't include a desktop experience or at LEAST an explanation that you can only use it on your phone.
I'm irked when companies go for this form of anti-documentation. It 1) makes me feel dumb 2) wastes my time 3) I'll eventually figure out what you're not telling me, so you might as well cut to the chase.
Firefox is my primary browser even on Android. It didn't work on it, so I suspected and tried it on Chrome. It works there.
It was successful too. I pulled out my phone.