product registration error in pencil check

fn_host_id cannot be longer than 12 characters but is currently 42 characters long.

what is the meaning of this error?

Hi, There,
This error message basically means that your host id which you used to activate the pencil check pro is incorrect. The host id is the Mac address (phisical address)of your network adapter, you can find it in terminal window by using command:
ipconfig /all (Windows)
ifconfig (Mac)