Truth be told, I had no idea that the game was having a problem loading save games. I had problems with my pc and lost all the game files, so I had to use the back up version 0.1 I had on my phone with the characters and use the previous version of the published game. Possibly the program consider it a completely new game since it is a clone version.
PD: I had to redo two weeks of work, but now I have learned the hard way to backup every day. I apologize for the inconvenience.