I'm here to help you mark your invoice unpaid, adamr1.

In QuickBooks Online, we'll have to delete the invoice payment to change its status back to unpaid. Here's how:

1. Go to Get paid & pay and then select Customers.
2. Select Customers.
3. Choose the customer and locate the invoice payment.
4. Click View/Edit.
   
5. Select More and then Delete.
   
6. Click Yes to confirm.
   

Additionally, I've added these articles that'll help you manage and track a customer overpayment in QuickBooks Online:

• Handle a Customer Overpayment in QuickBooks Online
• Record a customer refund or supplier refund in QuickBooks Online

Please keep us posted if you need additional assistance managing your sales transactions. We want to make sure your record is accurate.

Quickbooks had an update that change the way this screen looks...there is no longer a "1 payment" link - now just a filled green circle with "Paid in Full" beside it...no clickable link

Any ideas?

Let me join the thread and give details about the payment link in the invoice, sales286.

If you're using QuickBooks Online (QBO) Australia, the 1 Payment link will show on your Invoice page once you've marked the invoice as paid. Please know that the Paid in Full label will only display in the updated layout of the QBO US version.  

Here's a visual reference:

Based on your scenario, you seem using the QBO US version, which gives you the updated layout due to the new invoice experience. If this is the case, you're correct that the invoice template now displays Paid in Full instead of a 1 Payment link. Nevertheless, you can still track the payments in the Sales menu. Here's how:

1. Go to the Sales menu, then choose Invoices.
2. Locate and click the transaction.
3. A window will appear.
4. In the Invoice activity section, hit the View payment link.

See the screenshot below:

You can also send invoices over time as you work off an estimate in QuickBooks to collect partial payments from your customers. Visit the article below based on your region:

• Set up and send progress invoices in QuickBooks Online (US)
• Set up and send progress invoices in QuickBooks Online (AU)

You can always count on me if you have further questions about handling invoices in QBO. You can respond to this conversation to get in touch with me.

There is no ONE PAYMENT link when I try to do this.

There's no ONE PAYMENT link when I try to change an invoice from paid to unpaid.

Thank you for following the steps provided by my colleague, Charlie. I'm willing to cooperate by giving you a screenshot to ensure you can locate the Payment Link from the invoice in QuickBooks Online.

Before we proceed, please ensure you're viewing the paid invoice. Once done, choose an invoice to let the Invoice Activity appear on the left side.

From here, you can find the Payment Link for the invoice. For further guidance, please refer to the illustration provided below:

After that, click the Payment Link, and you will be routed to the Receive Payment section. Then, delete the payment under the More option.

If the option isn't showing on your end, let's perform troubleshooting steps by logging your account using an incognito window to help you access a fresh website and avoid conflicts with stored data or cookies.

You can save time by using one of the following keyboard shortcuts:

• Google Chrome: Ctrl + Shift + N
• Safari 11 or newer: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P

If it works fine, return to your original browser and clear its cache to start fresh. It will help eliminate minor issues while using the platform.

In addition, use another supported and up-to-date browser. By taking these steps, you can ensure a smooth and problem-free experience while using QuickBooks Online.

For future reference, you may like to view and bookmark these articles related to invoices in QuickBooks Online:

• Add Project Estimate Summaries To A Progress Invoice In QuickBooks Online
• Add, Customize, Or Remove Logos On Sales Forms

We want you to know we are still here to support you with questions or concerns regarding your invoices and payments when using QuickBooks Online. Our team is dedicated to providing you with the guidance and resources you need for successful use of the software.