Problem with the dashset "activity flow" - time display


I have a problem with the dashset “activity flow”.
It displays negative hours and also stays stuck on 0 sec when the contact was created several days ago.

Is there anything I can do to fix this bug?
I thank you for your help.

Hi @mio
I think the problem is the time zone.
please check your back-end code. Maybe you have typed the wrong time zone code.