I used 'form fill' in preview and need to know how to turn that off so those samples do not appear on form when accessed

Do you mean that you have enabled Auto-fill feature on your JotForm? If so, you can disable it from the Form Preferences. 

You can choose Disabled option from the pop-up window opened after Auto-Fill Settings.

Hope this information helps! If you are referring to something different or need any further assistance, please let us know. We will be happy to assist.