Phonetrack not showing all Tracks

I have 3 Devices in one Session, 1st Device is working well and I see the tracks.
Device 3 sends data to database but they are not shown as long device 1 has no data parallel saved.
Any advices out there?

In my case, “kid2” is not shown as long “kid1” has no data.
As shown here

And yes, the show lines option is set!

and how is it with your second session “createdbytoto”? Is that working?

Which tracking app are you using?