Moved to LiveSafe for better support.
There should be a URL or browser address to go to on the back of the card, I believe, but as I have never activated this particular product I can't be sure.
You could call Customer Service for advice on that, they are free to call and are linked under Useful Links at the top of this page or see below.
They are open 24/7 and the toll-free phone number for your area is: 0800 028 7581
Explain you have a handicap and I am sure they will be able to guide you along. If necessary they can connect you with Technical Support.