Susbribed to Norton antivirus online can't activate account

I purchased norton anivirus online and downloaded the installer. I have not been able to activate my account or cancel my purchase to buy a norton cd from a store.

 

When reading the 3 step instructions there is a window which should pop up with text asking if you want to click contiue. This screen does not display at all. I have tried numerous times to download norton.

 

 

Assistance would be helpful.

 

Thank you