Episode 4 progress erased
 

Hello,

I just finished episode 4 on iOS, put my phone down for a little bit, and was about to start episode 5. But when I did, the "Save Select" menu only had this save:

"Episode 4, Chapter 2: River Street" with a time stamp from about 4 hours ago.

Doesn't the game autosave every now and then so that even if something did happen to my save, there should be something more recent? Do you have any idea what's happened and/or what I can do?

I'd really rather not replay almost this entire episode, and don't want to go into episode 5 with randomly generated choices I didn't make.