Norton Internet Security Subscription Keeps Coming Up

Window 7 64 Bit system had Norton Internet Security installed.  When it reached end of life for the 1 yr subscription period I replaced it with a Norton Security with Backup.  Now I keep getting a large pop up that is telling me that  Norton Internet Security has expired.This keeps coming up on a daily basis.

I have run the Norton "Removal Tool" , and have also manually removed all folders and files related to the Norton Installer, then did another fresh install of Norton Security with Backup, and still having the large pop up that is telling me that  tells me that Norton Internet Security has expired.

The system is used as a Executive Conference room PC, and is causing issues with the users.   Senior Level Management , is asking whats wrong with the Norton Anti Virus on this system.

Thanks For Any Assistance!