I keep getting kicked out of QuickBooks when trying to process a payment.
I'm here to help share information in making sure you'd able to process credit card payments.
To start, you can try clearing your QuickBooks Online app's data. This will help fix any errors in the system.
To do this task, here's what you'll need to do:
Once done performing the steps above, close and reopen the app, then try to process credit card payments again.
You can check out these articles for additional reference:
QuickBooks App for Windows and Mac: General support
That will point you in the right direction, 79Roze.
Please let me know how it goes. I'd be glad to further assist.