Draft Sight Professional transferring the licence

Hello,

I'm registered user of Draft Sight Professional SP2 2016.

Now I need to transfer the licence to a new computer.

I try to use the option ->Help->Transfer Licence  it invokes the command: TFERDSP  but Command window says: TFERDSP is a not recognized command.

So, How can I transfer the licence to my new computer ?

Thanks in advance for your help.