Help with cubase artist 7 activation

Hi there …
I am just purchase cubase 7 , and i got the activated cod by email ,i tried many time to activate with elicenser control center , but it doesnt work , it says (connect usb-elicenser) which i dont have it
Can any body help me with this problem how can i activate cubase … untel now i cant use it , it close .

You can’t…you must buy an eLicenser to use Cubase 7 and up!