That didn't seem to work. It opened up a blank Discord page with no text channels. I wonder if I was just too slow.
Yes. If that's the case, then it sounds like it would've said something about imputing my age, but it's just saying there are no text channels.
I tried using the App instead as well, and simply received a "Whoops... Unable to accept invite" message. If there's a place where I'm supposed to put my date of birth in on my discord profile, I'm not seeing it.