The remote also supports bluetooth technology. I definitely recommend pairing it for best experience, but it’s currently harder than it should be. Consult FAQ: How to pair the AirMote?
Do you mean the “ceiling” orientation? I’ve found the auto keystone to tolerate pointing at a ceiling with that setting, there’s some cutoff where it switches. A manual keystone option should be provided either way haha
Everything else I agree with. I’ve seen the phantom volume change a couple times. Often soon after using the on-projector volume buttons so I suspected that was the source…