Why I can't use Vfr 5 trial?

I am a user of Vfr next user, I want to trial Vfr 5. I install it , but I can’t to run, show massage " no GUI license" Why?

Hi @pun1407

This looks like it’s already discussed here.

If you are having licensing issues, best would be to contact our Technical Support representatives so they can assist you further. Make sure to provide your email address associated with your licenses.