Deleting Registration Pop-up

Using Windows 10, I have CorelDraw 12.  Every time my computer re-boots,

I am requested to register.  I cannot register CorelDraw 12 because it is not supported.

It's an endless loop.  I'm always requested to register, but can't register.  It's annoying.

How can I delete that register reminder and stop it from coming back?

I have no interest in upgrading from 12.  It does what I want.