I am preparing to get a new maching and have had the same email address for years.  I even checked to see if it was registered under my motherinlaw's email and had no luck with that as it is protecting her machine as well.  I show my subscription as active and wonder where I can find my email that I registered with so I can add tha antivirus and make sure it is interfacing correctly with 8.1.  Any thoughts would be helpful - I still have my keycode and serial number.