If you entered data to Katana for testing purposes, made a mistake in data import, or just want a fresh start, you can delete all data from your account.
NOTE: This action is allowed only available to account owners - the user who created the account in Katana.
Navigate to Settings screen
Click on Clear data from the left-side menu
Click Yes, please delete everything
You will be asked to enter your account's email address to confirm the deletion. This step is added as an additional security measure to prevent the accidental deletion of data.