Let's perform some troubleshooting steps to fix the issue, cmack00,
You can run the Verify and Rebuild Utility to fix any damaged transactions, lists, or SQL table structure in your company file. You can follow the steps in this article, please know that both Point of Sale and QuickBooks Desktop have the same steps: Verify and Rebuild Data in QuickBooks Desktop.
However, if it is still showing an incorrect date, you can uninstall and reinstall the software. Just make sure that you have the license and product number for the reinstallation. Also, ensure to create a backup file before uninstalling QuickBooks Point of Sale for the safety of your file.
For your reference, you may want to check out this article if you encounter errors in POS: Error: POS got stuck when using QuickBooks Point of Sale.
Reach out to us if you have any other concerns about purchase reports. We're always right here further assist you.