The problem is the QR reader App didn’t recognize it when I try to read it from a saved screen capture.
Discussion
If you use nostr:npub1getal6ykt05fsz5nqu4uld09nfj3y3qxmv8crys4aeut53unfvlqr80nfm you can generate an static QR with your username +“.png”
Like this:
“getalby.com/p/marcelo.png”