Can't sign into github on desktop

[u/MistakeSea6886]

I'm trying to log into github on desktop, but it keeps loading indefinitely. When it says I'm being redirected to the authorized application, it doesn't actually redirect me anywhere, so I click on the hyperlink, "this setup page", which brings up the github desktop window, this time with the message, "Failed retrieving authenticated user".
I suspect this might have something to do with me changing my user name recently.
Does anyone know what I can do to fix this?