About the three modes of IP Masquerade Mode

[huzesama]

when I try to switch between these modes, my app often cannot connect to the server, and sometimes it suddenly works.

[Mygod]

Export debug information?

[huzesama]

emmm....Sorry, I seem to have misunderstood something. I mistook the switch for sharing VPN via USB (or WiFi) as the monitoring switch.
But there are still some things I don't understand. About the functions (operating mechanisms) of the three modes of IP Masquerade Mode. Because when I try to switch between these modes, my app often cannot connect to the server, and sometimes it suddenly works.
I have updated my discussion.