When you go back after clicking connect & refresh in the app, you should be logged in. If not, that means you haven't set your Nsec properly.
You can follow this guide.
https://blog.getalby.com/how-to-use-nostr-with-the-alby-extension/
It looks like kiwi ain't working for me, the extension part looks right but it doesn't work the connect stuff
Just as a follow up with nos2x it worked perfectly and i just quiet trying alby
I also use nos2x for nostr logins. It works great.