You did everything correctly. If you do not apply an evaluation license, PD4ML is in demo mode. The difference between demo and evaluation mode is not that big: the banner is not suppressed, but it is not annoyingly contrast. And there are few minor differences.
Is the banner “demo mode” or “evaluation mode”?
BTW: I’ve just tested your license code and it appears to be valid.
> getting inverted page with demo banner
“inverted page” sounds as a program issue. Could you please email us an HTML sample and its resulting PDF tp helpdesk pd4ml com?