That's correct. Dishy needs to see the entire 'bright' area of the circle, and there shouldn't be anything in the camera blocking that 'bright' circle view. The 'direction' Dishy will adjust to face is the lowest point of that bright circle. Is that still north, or where?
Yes, straight north. The thing I'm not sure of is whether mounting it on the north side of the house on the pole I showed in that picture I uploaded is sufficient so that the roof behind it to the south is not in the bright circle's field of view. I still have the problem that I can't see anything on the phone screen when I am outside. Even though the screen is bright enough to see when I run the camera app, the starlink app dims the "bright" circle too much to see in daylight. I asked about that on the starlink_support reddit and was told that behaviour seems to have started about last week and seems like a new bug in the app.
I just tried using my iPhone 8 indoors and spinning around. That gives you an idea of how the 'circle' works. For me, the 'rear' of the circle is almost straight-up so I'd be surprised if the roof behind would interfere.
Could you use the App earlier/later in the day or on a cloudy day?
PS - I chatted to satellitemap.space guy, and he's going to make Dishy's direction configurable on that website as there's too much variation in which direction it points in the end. The only reliable way to find out is the App and Dishy itself for now.