Disconnecting from app after launch

Your problem is not even remotely similar.
Your Air 2S is a so called VSC drone, and this is typical behaviour for VSC drones when the connection between the AC and RC is intermittend.
So is the ‘Jerky Video’ in one of your posts.
Did you actually read the topic about VSC drones @Steve_Amerson pointed you to?
Here is the link again: