Are you are sure you are referring to KLAS ? There's no such thing as a KLAS V2, or anything like that ( although there is a KLAX V2, to differentiate it from the old Cloud version ).
In any case, as explained many times on the forum, and on all product manuals, you should never post questions about activation on the forum, and use the support email instead. Because, we next question would have been "which is your key", and we cannot discuss it here.