Reactivate one license

Hi friends, I need help.
I have a Cubase 9 license.
I formatted my computer and now I can not r. I’ve tried all reactivation procedures and I was not successful.
I click on reactivate I put the number of my license, I receive an activation code and at the moment of activating the product aparace a message saying: the activation code has already been used. An activation code can only be used once to download or update a license.
Can someone help me?