Nice! Thanks for check. I will keep debugging.
Now with outbox, a lot of unpaid users will connect to these relays.
On another branch of this, I had this idea that the NOTIFY should only come to current subscribers that haven't paid this month yet.
Meaning that, I think it is hard for new users to see this message and decide to join the relay. They might not know anything about nostr.wine.. they just got it from a list somewhere... and then boom payment request. The jump is too high. New users might be better suited with an introduction to the service, maybe even via DMs to avoid the sudden popup.
Have you seen this work with brand new accounts? Meaning, you show the message and they actually pay?