I appreciate your detailed information about what's going on, Meadows1982. I'm here to help you with your license or product number in QuickBooks Desktop (QBDT) Point of Sale (POS) software.

To begin with, the error message you received suggests that you have used an inaccurate product code while installing the product. However, if you're fully confident about your code, you'll want to ensure the time and date on your system are correct, as this can cause the installer to fail when validating system requirements or licenses.

Here's how to update your date and time settings:

1. Close your QuickBooks Desktop.
2. Right-click the time display on the Windows taskbar, then select Adjust Date/Time.
3. Check if your date and time settings are correct. If they are, move on to the next solution. If not, continue with steps 4 to 8.
4. Select the Date & Time tab, then set the date for the current year.
5. Click Apply, then OK.

Moreover, ensure you're logged in with administrative privileges. If you're still getting the error, I recommend a clean install of QBDT POS. This process will remove installation issues and ensure a fresh process.

Here's how:

1. Uninstall your QuickBooks Point of Sale.
2. Rename all Point of Sale folders.
3. Reinstall the Point of Sale.
4. Restore your company file.

I've also included an article to help you learn features in the QBDT 2024 release and how to use them to benefit your business: What's New in the Latest QBDT Version.

Please keep us posted if you need additional assistance performing the troubleshooting steps.