If Imposition Wizard rejects your license key, please make sure you downloaded the proper version of the software.
If your license key is quite old (purchased before 2015), it is most likely for the old version of Imposition Wizard. See here for more details: https://pressnostress.com/iw/old/
If you have a subscription license, make sure it is not expired. You need a new license key if the old one is expired.
If you have a permanent license and the license key doesn't work, your free updates period has expired. You need to either renew the license, or roll back to the older version. Contact us if you need a hand.
Customer support service by UserEcho