I just stumbled on your post so I moved it to the HyperLynx DRC community where you should get a faster response. Did you receive an email with your 16-digit activation key?
I checked your account on Support Center and found that your license for HyperLynx DRC Free Edition is available for you to download. Please visit support.mentor.com and login. Then go to the "Manage Products" page and click the "Licenses" tab and then click the sub-tab "Activation Licenses". I'm not sure what happened to the email of your license. It could be in your Spam folder, but you won't need that email if you just download the license from the "Activation Licenses" page.
Dragan, did Marty's response answer your question? Are you up and running now? If so, please mark your post as 'Answered.' Thank you!