I just now tried out nostr login with nos2x-fox and it was asking me to put in a message I received via IM which means that there was a permanent record created of me logging in just now. And it was much slower than need be. I don't have a connected lightning wallet. I had commissioned "crypto coffins". Just last week I got the complete batch but I'm not a marketing guy and apparently it was a weird idea :) I'll share the links when I find the time to upload photos of the whole set.
The new version, with improved Nostr log in, is not live yet. Coming in 2 weeks. Final bug fixes and testing underway. What you tried is a very old version of our Nostr log in which worked by sending you a DM. We use the extension to log in now.