Retrologue free trial download

Hi all

I downloaded and installed the free trial, however when I tried to open it my Mac wouldn’t allow it (‘Unidentified Developer’). I changed the security settings to allow all downloads but now every time I try to open Retrologue I keep getting the prompt box for installation. To open it I am clicking on the opened box icon, which I assume is what I should be doing.
I am new to all this stuff (as you’ve probably guessed) so any suggestions would be helpful. I have a MacBook Pro running Mavericks.

Thanks

Figured it out.

Thanks