If you wish to delete all synchronized data from the cloud, follow these steps.
Deleting synchronized Dropbox data
- Open your Dropbox in a browser or on your computer
- Navigate to the Apps folder
- Delete the “Notes for Android” folder
Deleting synchronized Google Drive data
- Open Google Drive in a browser
- In the top right corner, tap the Settings icon and choose “Settings”
- Choose “Manage apps”
- Find “Notes for Android”
- Tap “Options” and then choose “Delete app data”