Thanks a lot for such a prompt replay.
The problem is I could not find any links in my account interface (using a browser) that I can download any license file.

Another thing is, if I recalled correctly, I downloaded this internet security through a link provided from an email sent by the official with a special deal.
I can hardly recall if I got an license code for it.
Is that the possible reason I don’t see any license code shown in my account?