"This license is used by too many different users..." [Solved]

[Maemong]

I can't speak english perfect. Sorry

I formatted my computer yesterday and before that, I have formatted about 2 ~ 3 times. today, I downloaded the cubik studio and enter my license code but I got a message

"This license is used by too many different users..."

I have never show my code to other people.
Why is that message show?

[ScreenShot]