revocation_of_authorization
Revocation of authorization. The customer told their bank to stop recurring payments to you.
Will retrying the charge work?
No. The same card will keep failing. You need the customer to give you a new payment method.
What to do about it
Don't retry. Treat it as a cancellation signal. A short, personal email asking whether they meant to cancel can sometimes save the account.
What to tell your customer
Your bank stopped this recurring payment. If you'd like to keep your subscription, update your payment method.