Game Won't Save?

[PandaXIII]

Hello everyone. Having a bit of an issue here. I'll be playing and have to get off the comp, so I click Save and Exit, and exit the game but when I come back it was as if I never played. I'll have to use the explosive to smash through the giant boulders. I've had to do this about 4 times. My friend also made a profile and it did the same to him as well. Any possible help at all would be great. Sorry if it's not very clear or anything. I'm relatively computer-literate, but not very much lol. Thanks for your time.