If you go to the Btcpayserver site, it just asks you to provide your Nostr handle and your npub. Then it generates the QR code for you to pay and you use lightning to pay it. Give it try first. If you’re still having trouble, send me a zap with your name and I’ll get you in. I do this to learn BTCPay myself as well as to let others experience using it.

Happy to help you if you’re having trouble, but want you to give it a try first. 🤙🏻🫂