To answer a Challenge:
- Go to Challenges
- Click on the filter "Pending" or click on your push notification you've received.
- Click on "Accept" to accept the challenge of your opponent
- Read the instructions and when you’re ready, click on "Start". Make sure the sensor is paired with your device and the sensor icon in the top right corner of the page is green
- When you finish the Challenge, click on "Complete"
- Get the result of the Challenge