New Computer won't log into steam

[Click Ṁċßⓞⓞm (HUN-US)]

Just set up a new computer, it is running windows 11. (I'm using my old computer to write this, as it is not having any trouble logging into steam)
I've checked and rechecked my password, even changed it a few times. Also checked my firewall settings and they appear to be set correctly to allow Steam through the firewall.
And every time I try to log in on the new machine it says my user name or password are invalid.
I tried to download the steam app on my phone to log in using a QR code but even on my phone it says my username and password are invalid.

Anyone have any ideas?

[ReBoot]

Make sure you're logging in using the account name, not the profile name nor email address.