Patreon changed its billing from California, USA to Dublin, Ireland for this month. So a lot of banks rejected the transactions as possible fraud.

This would be recoverable ... except that Patreon’s systems seem to have automatically wiped all patronage relationships with a bounced transaction!

there is no news writeup yet, but start at this twitter thread:
https://twitter.com/JasonKPargin/status/1686783605551382530
https://archive.is/RgMCt
https://www.reddit.com/r/patreon/comments/15g4sj8/why_did_i_suddenly_lost_300_patrons/

IF YOU SPONSOR SOMEONE ON PATREON: go in and check your transactions for August, and re-send them if they bounced. The “retry” link is located in your billing history. (Maybe.)
https://www.patreon.com/settings/billing

Patreon are being vague and trying to play it down. We *assume* they are trying to un-bugger their screwup.
https://archive.is/IlNRj
https://status.patreon.com/

Also, payments via Payoneer have been disabled for now, so that hits me personally. how annoying.

(Nobody knows why the move to Dublin. Too many chargebacks in California? Irish tax advantages? Not thinking very hard? WHO KNOWS)

UPDATE: Patreon admitted there was a fuckup! And it's up to you to fix it. Sucks to be you, eh. https://circumstances.run/@davidgerard/110833199221347801