Just to chime in on 3) - when you install an SD card and set it to “Record events only”, the camera records in 1-minute increments and saves the 1-minute clip to the SD card if motion is detected within that 1-minute increment. So if there’s motion spanning multiple 1-minute increments, it will save all of those 1-minute increments until motion is no longer detected. You can find this setting in the Camera Settings > Advanced Settings > Local Storage (when Local recording to micro SD card is turned on you can select between “Record events only” or “Continuous recording”).
Helpful tip - When you use the playback feature to view footage saved on your SD card, it will highlight in color the time increments where there is footage saved on your SD card. It can sometimes be hard to see small 1-2 minute increments - you can pinch to zoom in and out on the timeline to change the scale to more easily see and select specific times on the timeline.