Changing your payment method
Edited
If you want to change the repayment method of an existing order, go to your Buyer Portal and go to the Outstanding tab (1). Then, you'll click on View Order (2).
Once you do, you'll see the following screen. To to Change your payment method (1) and click on Manage Payment Methods (2).
From here, you'll see a widget pop up that allows you to add another bank account.
Once you do, Plaid will pop up, as seen below.
Click continue and find your bank. If your bank doesn't show up, you can scroll to the bottom and click on "Link with account numbers"
Once you've added your new account, it will show up as a saved payment method. You'll then need to go back to the order and update the payment method.