You may be logged out automatically from the PC or Windows 8 versions of LINE under the following circumstances:
1. When you log into the PC or Windows 8 versions of LINE from other devices.
2. When you have changed the email address or password on the smartphone LINE app.
3. When you have logged out using the Device Manager on the smartphone LINE app (for iPhone, Android, Windows Phones).
4. When a network error or a system failure has occurred.
5. When the app remains unused for a given amount of time.