Failed charge notice
Sent when the first card charge attempt fails. It tells you:- the renewal amount;
- the reason given by the card issuer, when available;
- the date of the next attempt;
- a link to update your card (when available), which follows the single-use, 48-hour rules.
Subscription ended for non-payment
Sent when the subscription is terminated automatically. It explains the reason:- card: the charge attempts did not succeed (the email says how many were made);
- Pix: the renewal Pix was not paid in time.