I found it just like retard user said in the digg-digg.php file, to change it for it to Display in home screen you have to find.
function isFloatingButtonAllowDisplay($ddFloatDisplay){
Then Change the part retard user said from false to true.
Honestly I feel it should be the webmaster to choose if they want the share to float on the home page or not. I was about to code it into the theme, since the main reason I wanted is for it to show on the side on desktops, but since my site is responsive. I also used built in ones on posts as well.