Need help with LifeThread? Email mat.enrique.galicia@gmail.com and I'll get back to you.
Your chapters and threads live on your device. If you use iCloud backup for your phone, they're included in that backup like any other app's data. LifeThread itself has no cloud server.
Your main thread is your real life. You can start a separate thread any time to reflect from a hypothetical "what if" path — it never mixes with your real chapters unless you want it to.
Email a description of what happened (and a screenshot if you can) to mat.enrique.galicia@gmail.com — include your iOS version and the app version (Settings → About).