Hi Shabeer,
We regret for the inconvenience caused. As per our records, you are not having license for WPF product and you have not downloaded the evaluation copy of our WPF product. So you are not able to get the unlock key for WPF product. Please purchase the license or download the evaluation product to get unlock key. In the meanwhile, could you please let us know where you downloaded the WPF setup?
Please let us know if any concerns.
Regards,
Sathya. N