Unfortunately, I’ve found the green bars to be unreliable and missing recording in events only mode continues to be reported. Also unfortunate, there is no published list of known bugs, so people just keep creating new threads, which is all they can do. I’ve resorted to using continuous recording and ignoring the green bars. Yours certainly sounded different because it sounded location related.
I think the “I get the “network unstable, please switch to 360p” warning,” is more the phone trying to connect to the camera and most likely between your phone and the wifi router. I would click the camera’s gear button to take a look at the camera’s “Device Info” and see what it thinks is the WiFi signal strength. That should be between the camera and router. Mine report surprisingly strong signal strength even far from the router. In any event, I suspect that’s more on the phone’s end and its connection.