Subscription Query

Hi all.Just a quick query.Have just installed norton deluxe that i purchashed from Tesco.I have registered the product with the product key that came on the card.On the Norton splash screen it says i have 366 days left.Looking in my services on the website in devices it says issue found.Upon clicking it says i am using Premium Subscription: Trial ......And it says to enter a different product key.Can i ignore this,or do i need to do something else?..Thanks..OH! HANG ON...THE PAGE HAS JUST REFRESHED NOW HAVE GREEN TICK AND SAYS PROTECTED...Sorry Folks..