Help! I have the same issue. Everything is gone! The app was working fine for a month and now nothing. There is a bug report here https://answers.ea.com/t5/Bug-Reports-Technical-Issues/My-EA-app-game… (View Post)
If you are experiencing the error code 0, you can find more information here. This thread mentions a work around. You can also try the 'save as' option https://forums.thesims.com/en_US/discussion/998… (View Post)