Hi there, Rebecca. I can help you how to remove the payment method field on your receipts in QuickBooks Online(QBO).

We've received multiple reports about the payment method not showing up on the receipt. I understand how impacting this is on your business.

While there are no updates yet, I suggest contacting our QuickBooks Online support team to be included in the list of affected users and to receive email updates about the invoice payment. 
 

Here's how:
 

1. Log in to your QBO company.
2. Select Help (?).
3. Click Contact Us and choose a way to connect with us:

• Start a chat with a support expert.
• Get a callback from the next available expert.

You can contact us from Mondays to Fridays, 6 AM to 6 PM PT.

In the meantime, you can consider not choosing a payment method when processing the payment in QBO. This way, the payment method field will not be showing on the receipt.

Here's how:

1. Go to the +New icon. Then, select Receive payment.
2. Select a customer on the Add a customer field.
3. Leave blank on the Payment method section.
4. Click Save and close.
5. Reopen the payment by clicking the magnifying glass in the top right corner.
6. Select the payment you processed. Then, click Print.
7. On the Print preview page, you'll notice that there's no payment method added to the receipt.

Furthermore, you can refer to this article to learn how to record paid invoices in QBO: Record invoice payments in QuickBooks Online.

Reply to this thread if you still have concerns about managing your receipts in QBO. I'm always here to help you in any way I can.