Device is not shown any longer

[bospre]

Hello,
since some time one of my device is not updatet any longer.
My first guess was, that the device did not send data any longer.
But using a network sniffer I found data packets from that device coming in.
Then I rembered the logfile. There I found incoming data from that device.
After a few days of thinking about that problem (of course nothing changed at traccar server in the past) I looked again into the logfile.
And then I found the reason: the time stamp was wrong.
Usually the line looks like this
2019-10-11 07:31:09 INFO: [D99AEA57] id: 027043443613, time: 2019-10-10 15:55:50, lat: 50.19193, lon: 8.66381, speed: 2.4, course: 317.0
The line of the not any longer logged device looks like this:
2019-10-11 07:30:50 INFO: [01284A68] id: 027042673756, time: 2000-02-25 06:30:47, lat: 50.08633, lon: 8.48578, speed: 41.1, course: 167.4
The time stamp is fom Feb. 2000.
I will check that device, but probably I will not be able to change the behavoiur.
It is a GT02, a cheap device, from which I have 3 or 4 devices, everyone working without trouble for several years.
Does anybody know what can I do?
And can I advice traccar server not to use timestamp of the device?
Thank you
Boris