I used nos2x to login. You need to zoom-out the browser tab to make the "sign-in with browser extension" button appear within the viewable area.
Discussion
I using a 27 inch screen and maximizing the frame (don't use windows on my "window" manager, hehe) that contains the browser won't show anything new. When I click on "Sign in" and then "Using Nostr extension" it doesn't login. It just shows a new popup which says to login with Albiy, Nos2x, or other extensions.
That's weird. I'm not sure what's happening then. Maybe nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqg4waehxw309ajxjar5duh8qatz9aex2mrp0yq32amnwvaz7tmwdaehgun9d35hgetn9ehhyecpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqzp3nq8v83enlvvfwecz9h20j0wa827lgu7fmfygcjtd0afknjsqv7tmc38x can help.
On another note, which window manager are you using with which distro?
I just added some errors messages on that screen, hope that helps.
I have no idea what messages you mean, but I've tried and managed to login with #nos2x at once, without any trouble, so something you did solved either my problem logging in or my clumsiness finding the way to do it before.
So, thank you so much!