My email below I sent to the app developer (huyu0415@163.com) this week 23 Apr 2018. This feature used to be available in the old v1 app but disappeared in the v2 major upgrade.
Hello,
It has been some time since you released the new major update on the app which has worked much much better.
As I mentioned back then I was disappointed to see that now I don't get told which detector set off the alarm instead all I am shown is which Zone is set off.
I have had a few false alarms from a PIRs group recently, can please update the app to tell us which detector has been set off instead of just the "overall" group.