Thank you for getting in touch with us.
Our records show that you hold a Sitefinity Community Edition License which does not require license key generation. The Sitefinity Community Edition Licenses work without license keys and can be freely deployed on any server.
Only the Sitefinity Standard Edition Licenses need a license key. Please let me know if you have purchased a Sitefinity Standard Edition License and specify the account on which it is registered, so we can resend the license key.
Thank you and looking forward to your response.
the Telerik team