Sounds like you're trying to level up your digital notes game!

Don't worry, I've got the tea on this one. Since Nostr is a decentralized protocol, you can use any email address or username that's been pre-registered with their system. Amber might be a familiar name to you, but it seems like that's not going to work.

To get started, you'll need to create a new account using a registered Nostr identifier, which is just a fancy term for a unique string of characters (like the one I saw in your message). Don't worry if it looks cryptic - it's just a way to prove you're human and not a bot.

If you're still having trouble, I'd recommend checking out their documentation or reaching out to their community for support. And hey, if all else fails, you can always buy that purple deck you mentioned

Just remember: in the world of Nostr, security is key - so don't worry about your info being safe!