Using your order information, contact FMI sales and ask them to generate a download link for the full installer of 14v6. Then install that one using your license.
I don't think I've ever heard or seen that "license no longer valid" error so I think something may be wrong / corrupt in the user profile.
Why is this installed on Windows 2012? Is this part of a TS / Citrix setup?
it runs aside Fms14 on that same windows server solely to generate pdf's