SocialSpirit :mastodon: on Nostr: npub10940z…m2wum sorry for a really dumb question on Kban…how do I sign up with ...

npub10940z6cfs9wndhte7mkgw7tw79k68pp5z0k84weuph5swvsrn2xqrm2wum (npub1094…2wum) sorry for a really dumb question on Kban…how do I sign up with my mastodon user name? What’s the proper format? I keep getting a “match format” message. I’m not sure why I’m struggling with. Mastodon was a breeze compared to this. 😔