Looks like you haven't read the instructions... ;-)
You can make micro adjustments (+/-) to height or orientation by pressing the number box for about 2 seconds.
During your preflight checks you will see the mission data loading on the drone and when it's complete the drone is ready to start the mission with all the WPs, orientations, heights, and taskings it needs to perform the mission on its own. So if you lose connectivity, the drone knows to "Charlie Mike" and Continue Mission. So if you think you may lose connectivity make sure your last WP is close to your start point or if you're on water set it for the shore line. You can also set up the End Mission behavior to Return To Home vs Hovering or Landing in Place. If you have connectivity, you can pause the mission at anytime, move around, etc., then resume, or you can break-away and RTH the normal way.
As for camera adjustments, yes I have those too, but I can't adjust the lens, exposure, shutter, etc., for a specific mission on the app.