You might be contacted by a contributor who wants to re-do a submitted survey. You can only restart a survey for participants who have already completed and submitted the survey.
Step 1. Go to surveys
Click the menu icon on the top left of your screen and click Surveys.
Step 2. Select open
Select Open in the Status drop-down.
Step 3. Click the survey name
Click the survey name to edit it.
Step 4. Select Restart
Scroll to the Contributors table. Point to the participant and click their 3-dot icon on the right side of the page. Select Restart.