Hello there.
I understand how important it is to have your 10-digit e-file pin restored. Rest assured that I'm here to guide you in getting the best help to retrieve your 10-digit e-file pin. You can contact the IRS E-file services at 866.255.0654 to have your 10-digit e-file pin back.
You can also refer to this article to learn more about lost 10-digit E-file PIN or rejected enrollment: Set up Federal e-file and e-pay in QuickBooks Desktop Payroll Enhanced.
After getting your 10-digit e-file pin, you can now start e-paying and e-filing your federal taxes in QuickBooks Desktop Payroll.
If you have additional concerns about getting your 10-digit e-file pin back, please don't hesitate to reply. I'm always here to help you.