Feature request: Clarify Handling of PayPal Revoked Authorization

🔍 Problem Statement

When a PayPal user revokes Pelcro's billing agreement authorisation, it is unclear how Pelcro handles the subscription — whether it is cancelled, suspended, or left active with failing renewals. This ambiguity creates confusion for admins and subscribers.

💡 User Story

As a Pelcro admin, I want clear, documented handling of revoked PayPal authorisations, so that when a subscriber revokes their PayPal billing agreement, the subscription status is updated predictably and the admin is notified.

🎯 Definition of Done (DoD)

A feature is done when:

✔️ Given a subscriber who revokes their PayPal billing agreement, when the revocation event is received, then the subscription status is updated appropriately (e.g. suspended or cancelled), the admin is notified, and the behaviour is documented.