Itll let me change my email but not user name.It's even easier on a phone. Bottom of the page there's a green bar. Account is the very first tab down there, bottom left side of screen. Press that. The screen that pulls up has the name change option at the very top. It's a big ass button next to your name and it says "Change"
So i gotta make a bunch of posts and not be a lurker 😬i've corrected this so anyone with 10 posts or more can also change their name at least once every 90 days.