jonathan_needs_help

[viral relic]

You would recollect the mandate following this guide: https://stripe.com/docs/payments/ach-debit/set-up-payment

Or

Nope sorry, the other option I was thinking of isn't available

[mellow pagoda]

Why would a mandate become invalid in the first place?

[viral relic]

But you can read about mandates here: https://stripe.com/docs/payments/ach-debit#mandates