Basically as the title says. I have an existing key. I have to reactivate. I sign in with the wrong account. I enter the key into the box. And it just says 'unknown error encountered please contact support'. So I tried 'manual activation'. Signed into the website, clicked 'pro', entered my key, and the website actually told me correctly that 'serial is not assigned to you, please contact the owner of the organization.'. This is what the HUB should say, as well, instead of just some random 'error'!.