Let's perform some basic troubleshooting steps to determine if there is an issue with the browser your customer is using to open the Review and Pay link, Jackie.
Start by clearing your browser's cache so the system can start fresh. Also, ensure that you're using a supported browser and that it is updated to the latest version for the best performance.
It’s possible that you are using a new layout in your QBO account. You can change it back to the old layout and see if your customer can access the payment link.
I'll provide this article for your review to check your customer's outstanding balances: Run an accounts receivable aging report in QuickBooks Online.
You can always rely on this forum for any queries regarding payment links. Just click the Reply button to add your concerns, we're always here to assist you.
