Freebie Draftsight version ..refuses to either Reactivate OR Activate even when freshly reinstalled

Been Using Draft sight (hobby uses) for a couple or 3 years . Was asked to Reactivate my earlier this year Reinstall  to Win 64 (win10 Version).

Which worked fine till Today.. Then it wanted a reactivation  No Go despite repeated attempts.

Soo fresh  Download, Clean (previous version uninstalled) reinstall .. SAME.. problem activation  does Not work.!

 Why?