Thank you for the follow up.
What happens really is some error in your graphic trigger. It seems to trigger on the signal change or event change but not with the time.
If I send a trigger with my PIR then I can see some historic at least for one hour.
But if the PIR is left alone for hours without any changes (do not trig) then the graph stops and do not increment thus do not show any historic.
That’s the way I see it 