On this field, select the newly created question (Respondent’s Email Address). If you do not see the created question on this field, click “Refresh” so that the add-on will update the question list.
You can also edit this created question and change its position, but make sure that it is still set as *Required and its Response validation as “Text” & “Email address”:
After editing the question, click “Refresh” so that the add-on will update the question list.