Photoshop CS6 Extended help needed!

I have Adobe photoshop CS6 extended education edition.

My mac needed restoring so when I tried to reset my photoshop cs6 my computer cant read the disk now, but its fine with others disks. I have tried to find a download but seem to hit a brick wall, it seems impossible to get help from adobe about my issue, does anyone have an ideas of how to get in touch with adobe or download Cs6?

Much appreciated