“The old key is a seed. The activation code is the flower. Use the legacy offline converter.”
If you are looking to convert a into an activation code , it is important to first understand the difference between the two. In the Kaspersky ecosystem, these terms are not interchangeable: kaspersky license key to activation code
If you're unable to convert your license key to an activation code using the above methods, you can contact Kaspersky support for assistance. “The old key is a seed