Free trial for Diagnostics Manager

Hi Sir, I'm new here in SQL Idera and would like to ask help from you.

I downloaded the free/demo installer of Diagnostics manager. The installation went successful, but the thing is we don't have trial license to work this application.

Can someone share how to get the free license or how demo application works.

Thank you in advance,

Regards.

Paul Policarpio from Philippines with Love :)