Occasionally, the sensor in your Goodtimer may not respond when the device is turned right side up or upside down. Don’t worry, sometimes the sensor doesn’t recognize that Goodtimer has been flipped over, similar to your smartphone not recognizing a change from portrait to landscape mode. If this happens, there are a few simple things to do to get it responding again. First, make sure that your Goodtimer is NOT set to Travel mode by pressing the “Travel” button on the bottom of the device. If it isn’t in Travel Mode, turn Goodtimer right side up and gently tap it down onto a flat surface. Just like our phones, sometimes Goodtimer needs a little “encouragement” to register the movement and this will usually be enough to fix the sensor. If the Goodtimer is still not responding, press and hold the small “Reset” button on the bottom of the device until the unit shuts off. Power it back on, by pressing the “Power” button on the bottom of the device. If it is still not responding, please contact us at hello@gogoodtimer.com for further assistance.