How can I add more devices using different codes to my Safe account
I bought three tablets and all three tablets came with F-Secure Safe 1-year cover for x3 devices each.
I have already used one of my codes for x3 devices. I now have a further x3 devices which need to be covered and I want to use the other code. However, I can't find how to add the other three devices to my original account using the new code witout having to pay for the new cover.
How can I add a further x3 devices with one of my other codes all registered in the same Safe account?