Thank you for the suggestion Elk. Sadly it didn't work. For those reading this thread, below are the unsuccessful steps I took to resolve the issue:
First I made the changes I wanted to the OPTIONS-PAYMENT METHODS area in the program. After noticing the changes weren't taking affect on my existing or new invoices I did the following:
Restarted the computer and relaunched Express Invoice - No change
Used the Express Invoice "Reinstall" option using the Programs and Features menu in Windows 11 - No Change
Completely uninstalled Express Invoice "Uninstall" option and selected the option to keep my old data using the Programs and Features menu in Windows 11. Then reinstalled the program - No Change
Completely uninstalled Express Invoice with the "Uninstall" option and selected the option to remove my old data using the Programs and Features menu in Windows 11, then reinstalled, setup up Express Invoice from scratch all over again and restored the data from a backup file - No Change 🤬
NOTE TO USERS WHO COMPLETELY UNINSTALL: If you choose the option to delete your data when uninstall Express Invoice, the installer will delete all your backups saved in your default backup folder too! Thankfully I predicted this and saved a separate copy somewhere else or I would have lost all my invoices!!! The installer needs to warn people of this and allow them the choice to keep their backups! The default folder for backups on Windows is: C:\Users\USERNAME\AppData\Roaming\NCH Software\ExpressInvoice\Backup
This issue should not be happening to me. Once again I'm wasting valuable time on a software problem. I hope someone from NCH reads this and addresses the problem.