Testing your device/browser’s geolocation capability…
If you are using Chrome running on Android, choose in Chrome: Menu > Settings > Site settings > Location. Make sure “Ask before allowing sites…” is on and make sure “https://survey.viva.ws” is not in “Blocked”.
If you are running Safari on iOS devices, from Home Screen go to Settings > Privacy, make sure “Location Services” is turned on, and “Safari Websites” is set to “While Using the App”.