Aeon 4 in 1 multi sensor not logging motion

I would like to see when my Aeon motion sensor has been triggered, as i have quite a few false triggers (lights coming on with nobody around). I am playing around with the sensor sensitivity, but would like to see a log of when it has been triggered. When i go onto the motion sensor settings, and click on logs it is empty (althoug is has been triggered a few times). On my Foscam motion sensor i can see all the triggered events in the log.