You cannot edit a survey response once it have been sent to the QuickTapSurvey Web App. If you need to edit a survey response, you have two options:
1. Delete the survey response and re-enter it from the QuickTapSurvey app.
2. Download the survey data and edit the response in the downloaded file. Please note that this will not update the response on the QuickTapSurvey Web App.