Payment Bug when backing crowdfunding

[eyeseast]

A user got the following error when trying to contribute to a crowdfunding campaign:

Error
An error occurred during payment (don't worry, your card has not been charged).

Request req_zpJHTu2dbI2Ffj: Invalid account.

Refresh the page to try again. If the error persists, contact us.

Not sure if this is related to recent Stripe migrations, but it does seem like we've had some issues with payments on MuckRock specifically recently outside of the request flow.