How can I disable autofill?

How do you clear the data when you preview the form?  It is hard to test the conditions when the data can't be cleared.

You probably enabled the CONTINUE FORMS LATER (or Autofill) feature where the form fields retain their values when previewing the form.

To disable this, follow the guide linked below. But this time, instead of setting it as ENABLED, set it as DISABLED.

Complete guide: How-to-Enable-Auto-Fill-on-Forms