How do I mark a manual bill as paid?

Once you make a payment directly to the manual biller, you can mark it as paid in the app.

For any manual billers you have set up, you will receive a "bill" in the app reminding you to pay your bill. Once you've paid the bill outside the app, tap on your "bill", then pull down to mark your bill as paid. This can't be undone in the app, so make sure you've actually paid the bill before marking it as paid! This only marks the current "bill" as paid, not the biller as a whole, so you will receive a new "bill" when it becomes available.