I purchase all episode of the game today, but the save option is only on the 1st chapter.
for the other chapters of the game, I can't save and backup because the save option don't exist!!!!
EDIT: I have find why!!!!! the save option appears only if you play at the chapter match to the desktop shortcut. (example: if you play at the 3rd chapter from the shortcut of the 1st chapter, the save option is not here!!!!!! But if you play at the 3rd chapter from the 3rd chapter's shortcut, oh it's magical!! the save option appears)
Now, i must begin again the 2nd chapter