@drbeatrizv Thank you for joining community!
I can help with instructions to turn off card processing in QuickBooks Online.
Here are steps to take to disable the feature after signing in:
- Click the Gear icon.
- Under Your Company, select Account and Settings.
- Click the Sales tab.
- In the Customize section, click on Customize look and feel.
- From the Custom form styles list, click Edit on the template to modify.
- Click the Payments tab.
- Click on the payment method(s) to disable.
- Select Done.
It might seem as if the boxes reverted to their original state but once you create a new invoice you'll see the boxes on the invoice template are no longer checked for online payment processing.
You can also enable/disable card processing from individual invoices, QuickBooks Online is designed to memorize settings from prior transactions.
Let me know if that helps!