Your application does not save automatically. Be sure to click "Save Draft" at the bottom of the page when you are finished making updates. This allows you to leave your application and return to it, and protects against unexpected interruption.
It is advised you make periodical saves when working on the application for extended periods of time to prevent against losing data in the unlikely case of a temporary network outage. If your internet connection is not strong, it is recommended you keep a copy of your typed answers in a personal text file in case of connection loss.