Ero Detection App - Not detecting lesbian activity

[Mortmin]

I noticed the detection app is not reporting when two girls is having lesbian H somewhere.
Unless you enter the map when they are doing it.
Like I know there is a girl in the beach changing room, and I see another girl running in there. I can wait forever long without the app is detecting activity, but as soon as the MC is entering the room, the app is notifying the activity.

I remember the same issue in the old KK plugin (EroStatus). And the author talked about it in the readme (Google translate, sorry):

"In school mode, when a girl autonomously uses the toilet or masturbates, it counts up.
However, lesbians cannot be detected and are counted up only when they are witnessed.
I was able to get it until the girl called out to a lesbian partner, but after that, I didn't know if she was just chatting normally, or if a lesbian was happening, until I witnessed them somewhere"

So, as they explain here, the EroStatus plugin gives a notice when one girl is calling another girl, and you know there is a greater chance of witness some girl-girl activity.