Hi there, @mbertone.

I'd be glad to provide you the link where you find the phone number for IRS E-File Help Desk. This way, they can provide you the steps on how you can reset your PIN. 

Simply browse through this article: Troubleshoot efile or epay rejection issues.

I'm also including our Help articles for related references in managing your account and transactions in QuickBooks Online.

Should you have any follow-up questions or concerns, don't hesitate to post again here in the Community or leave a comment on this thread. Take care and have a good one.