First, a bit more explanation to help others. Web Console is the name RHEL use to implement the upstream Cockpit.
My server runs AlmaLinux 9, and I setup Cockpit to access the server remotely via web browser.
I use Fedora in my laptop to access my server. It comes with Firefox 106.
The problem is that Firfox 106 has changed how it parses the string to login. There is a patch in Cockpit to resolve this issue, but according to this article, it will be available in AlmaLinux 9.1