If you scroll to the bottom of the popup there should be a button that says next and it should take you back to the page with your pronouns set!
Oooh, okay, the problem was I didn't have my mouse plugged in. So thank you, but also just to let you know you can't actually set pronouns if you don't have a mouse, which probably doesn't happen much but you might want to check? Or maybe I'm just an idiot and there's some other way to scroll that I just don't know, in which case sorry to bother you.