URGENT: HOW DO I ENTER NEW PRODUCT KEY AT MY NORTON ACCOUNT

A few week ago, I installed 360 v.5 under the version 4 product key.  My version 4 subscription expires in 2 days.  Normally I would enter the version 5 product key by opening 360, clicking Account, Renew Subscription, and entering the product key for version 5 - done deal.

 

The problem is my PC is out of commission and will be until probably next Monday - 3 days after the version 4 subscription expires.  Is there a way to go into my account (Access Norton Account) at Norton's site and enter the version 5 product key there?  I've looked there, but don't see anything obvious.  Are other options available?  I'd like to avoid the hassle of contacting Norton after Friday.  Time is short.

 

Toyman