How to renew subscription without signing up for mastercard securecode

I want to renew my subscription to NAV. On the symantec store site, after entering my info and credit card info, I was prompted to enter a mastercard securecode.

 

Note: this securecode is NOT the 3 digit number on the back of my card. It is some optional program. 

 

In reading about this program which I have never signed up for before, I learn that if I sign up for it, I will get prompted for this extra code every place I try to use my credit card that participates in this program.

 

I don't want to sign up for this "extra security" for my credit card.

 

How do I renew my NAV subscription without it?

 

Thanks.