Hi,

Have you checked if anything you have written using "screen off memo" is in Samsung Notes at all?

This is from the User Guide p.162

" Screen off memo: Create notes by detaching the S Pen while the screen is turned off and then writing on the screen. Screen off notes are saved in Samsung Notes. "

You can browse notes you create. From the Home screen, tap Apps > Samsung Notes. Browse note entries by swiping up or down. To search for a note, tap Search.