ashe thanks for the answer!
it says disconnected and connected repeatedly as shown on screenshot
here is disconnected log
[20/03/2020 01:42:16] 301: device disconnected (Current connection closed because of ident collision: device has opened another connection to the channel without closing first one. It may happen because of device firmware bug or by an unstable connectivity provider. In general, this happens to plenty of devices and usually can be ignored.)
and “Messages not found” is this mean my device didn’t send any data?
but GSM and GPS light are normal