If the EVO application does not open when selecting it from your application folder it may be hidden in the menu bar.
On Mac, there should be an icon of the application in the top right corner of your screen in your menu bar.
If you are on Windows, the icon should be in the bottom right corner of your screen in your system tray.
When you have your unit connected, the EVO Control and Loopback Mixer option will be available and this will let you access the application.