I'll be glad to help you modify the invoice to show unpaid again in the new invoice layout, Korver.

You'll want to locate the invoice transaction that you need to modify from paid to unpaid. Just go to the All sales menu and click Recently paid in the Type to filter down the transactions. Let me guide you on how:

1. Go to Sales, then select All Sales (Take me there).
2. Filter the Type, Date, and Customer.
   
   
3. Click the invoice that you want to modify.
4. The invoice is marked as Paid, tap on the payment link to open the payment linked to it.
   
   
5. Delete the payment from the More button.
   
   
6. Tap the Delete button to confirm the action.
   

Once done, it will show as unpaid again. For more details about the process above, see this article: Void or delete transactions in QuickBooks Online.

I'll be sharing these resources that will guide you in accepting payments and depositing them to your real-life bank in QuickBooks:

• Receive and process payments in QuickBooks Online with QuickBooks Payments
• Record and make bank deposits in QuickBooks Online

If you have any questions about your invoice transactions, please let me know. I'd be delighted to assist you. Stay safe.