Once you click the link above, you need to open the file that is downloaded. It is called SplashtopSOS.dmg
In Safari, the file will be in your downloads list which is an icon near the top right of the Safari window. It looks like a black circle with a white arrow pointing down.
In Chrome, the file will be at the lower left of the Chrome window.
In Firefox, the file will be in your downloads list which is an icon near the top right of the Firefox window. It looks like a arrow pointing down with a line under it.
