PayPal emails are unstable, are not properly associated back to a Nomos account if they change

[lf-]

I learned something ridiculous about PayPal today: if you check out as a guest, they will track which email you used with a card and change all the associated subscriptions to the latest used email with that card.

This breaks Nomos: the subscription renewal is interpreted as a new subscription on the new email rather than being associated with the original account with the original email. I am guessing this is because some kind of subscription ID is not used to associate it back to a Nomos account, but I am not certain of this.

Nomos should use some kind of stable association between PayPal subscriptions and accounts.