Hello there, FL User.
Thanks for joining this thread. Allow me to help and guide you on how to turn off pay stub in QuickBooks Desktop.
Are you trying to turn off the past due on your open invoices? If so, you can simply select the Turn Off link to remove the "Past Due" stamp. I attached a screenshot below for your reference.
For additional reference, you can check this article: Show Past Due stamp on invoices.
If you need further assistance with the steps, I recommend calling our QuickBooks Desktop Support Team. They have additional tools to pull up your account and do a remote session. You can check my post above for the steps on how to get in touch with our phone support.
That should do it! Please know that I'm just a post away if you have other questions about Past Due stamp. Wishing you and your business continued success.