M.Hat

I had 3 computers with pc matic installed. One of these computers has died, and I'm replacing it with a new one. My question is this... I'd like to reassign the PC Matic copy currently assigned to my dead computer to my new one (same IP). How do I accomplish this. (When done, I'll still have PC Matic on only three computers.) I did a search, but found nothing bearing directly on the topic. (Perhaps it's there somewhere, but I missed it.) Thanks in advance for your help. Regards, Don. P.S. The failed computer became inoperable. It has been disconnected and trashed.