What the !?%#$%^

Why, in the latest version:

  1. Changes I make one day to a drawing/ file are NOT there when I go back the next day to continue editing? This makes the program fairly useless.
  2. Why do I ALWAYS need to update the lighting in the environment when I start a file? Why doesn’t the environment lighting Save/ stick so I don’t have to reset it from a screen of black objects EVERY SINGLE TIME I open a file?? Another major annoyance making the program pretty useless.

Synching appears to be broken/ grayed out/ non functional. How do I restore it?