Hello ehabmehaseb, there could be several reasons for the issue:
*Absence of connection between the phone and the tracker
*Insufficient SIM card balance or traffic limits
*The tracker might have entered sleep mode
*Some settings may have been misconfigured
Please send us screenshots of the commands you are sending and their responses, with your login and unit ID, to our support email at support@gps-trace.com and we will try to help.