Phantom Floodlights

1st gen flood light camera has recently started putting the lights on "randomly" (not triggered by an event or live view). It's as though one of the users is pressing the button in the app to trigger it and then just leaving it on indefinitely. I have tried looking in the app for an explanation or indication as to why the flood lights are switching on, but there is no detail available anywhere that I can see. The app will only tell me what I already know (that the lights are on!)... How do I access the audit log to find out why the flood lights are switching on, so that I can resolve this?