Hi Iury, Thank you for writing a review. Did you read the 'First Screen Instructions?'. If you need Help on how to use this app- email our support asap(g1235813+LightComm@gmail.com), & we'll help you. Please try our other apps- - https://play.google.com/store/apps/developer?id=g - -Please review & tell your friends about them. have a lovely day.bye