Hello, Pitpat1015.
I appreciate you providing a screenshot of the error you've encountered when processing payments. I'll make sure you'll be able to pay invoices in QuickBooks.
There are times that the browser is full of frequently accessed pages, causing some unusual responses. Let's isolate this by using a private browser (incognito). Here's how:
- Press Ctrl + Shift + N (Google Chrome)
- Ctrl + Shift + P (Firefox or Internet Explorer)
- Control + Option + P (Safari)
Once opened, process a payment. If it works, return to their default browser and clear the cache and cookies to refresh their browser's page.
However, if the issue persists, you can use other supported browsers to pay your invoice.
In addition, you can check this article to find out when QuickBooks Payments deposits customer payments.
Please fill me in if you have any follow-up questions about processing payment. I'd be glad to answer them for you.
