I have the same here. At least I just didn't played much yet so I will have no problem to restart but not only all saves do not work that even if you save in the protologe that do not work too.
The only save I could use was the one in the room when you can cheek stuff around and call people.
But that game is so short that I wouldn't worry about that.
I beable to save games when not saving in the choose options of it. But when have a question the saves do no work.