If you are using the app, go to Settings and Therapy Dose. If "Manual" is selected, you need to manually restart therapy. With any other selection (Regular, Low, or High Dose), therapy will automatically restart. If you do not use the app, you can check and change settings manually by holding the device off your leg without the electrode connected. Hold the button down for 10 seconds to toggle between settings.
1 white light = Manual.
5 white lights = Regular