Bonnie - you might look at this in the Symantec KB: Subscription expiration date does not change after installing your Norton program.

(I had a problem with a Norton upgrade in the past, when it seemed to be OK on installation, but Live Update had a series of problems later. It needed the old version uninstalling before installing the new one - Later in the year I saw the boxes had big stickers on saying you must uninstall the previous version first!)

Mick