Thanks for joining this thread, @cplewacki.

I appreciate your efforts in trying out the given solution above. Let me route you to the best help available so someone can privately review your account and get your concern addressed.

Thus said, I'd recommend contacting our Customer Care Support. They can pull up and look into your account in a secure environment and further investigate this matter.

You can follow the suggested steps shared by my colleague Angelyn_T on how to reach them or click this article: Contact QuickBooks Desktop support.

For now, uncheck the To be printed checkbox on individual invoices manually will works. I know it's very inconvenient and time-consuming for you to clear them. However, you can install a new printer configured to print to a file rather than the printer itself before attempting to print invoices in QuickBooks. During invoice printing, select the newly installed printer as the printer for this print batch.  

Moreover, I have here an article that you can use for guidance in case you need to personalize how your invoice looks and make your company stand out: Use and customize form templates.

This should help you move forward. If there’s anything else I can help you with, leave me a comment below. I’ll jump right back in to assist further.