Vrcskd3 "invalid username/password"

I’m trying to start retexturing my own avatar, but when I try to log into the sdk3 control panel, an error pops up at the bottom of the screen that says:

[Always] Error logging in: “Invalid Username/Email or Password”

I’m using the currently recommended version of unity (2019.4.31f1)

I’ve tried using both username and email, and the password that I put in is correct, but I still get this error.