Restore Settings_cls defaults

[Julio CamPlaz]

Hello, 

I have been working with the module  "kivy.uix.settings", and I created using "self.settings_cls = SettingsWithSidebar", I was changed parameters from de panel (rotation, fullscreen,etc) and now when I run a job, the changes I did were saved for any job,and It does not let me set the default values. I tried delete all files and folders from kivy directory and re-install, but it does not work either.

HOW CAN I RESTORE THE DEFAULT VALUES?? Please, I need help