Hi محسن عبدالرحمن, thank you for your feedback. We would need further information so we could assist you. Would you please give us a call to the number +1 (866)477-3687 opt 3, and/or please report the problem at http://flir.custhelp.com/app/ask with the device, OS and camera information and we will be more than happy to follow up with you directly.