Good day, karlanllc-gmail-. 

I've got you're back to help you change the payment account in QuickBooks Online (QBO). Here's how:

1. Click the Gear icon.
2. Select All Lists.
3. On the Lists page, select Payment Methods.
4. Click New on the Payment Methods page.
5. Enter a name for the new payment method.
6. Put a checkmark in the This is a credit card box.
7. Click Save.

I'm adding this article for more guidance: Add or modify the accepted credit card types in QuickBooks.

You might also want to review all your sales and purchase transactions in the future. You can check out these articles for the detailed steps and information:

• View sales transactions
• View vendor transactions

That should do it! Fill me in if you have other questions about changing your payment account in QBO. I’m always here to help. Stay safe and have a good one.