How do I display plugin elements on another page?

Hello Guys,

How do I display elements of the classified plugin on another page?

For example, I created a homepage template for my theme and tried to display the expiry date with <?php echo $this->get_expiration_date( get_the_ID() ); ?> and nothing was displayed. What do I have to do to get this and other elements/features displaying on other page templates?

Thanks.