ESP32 stability

I'm not sure what is so secret about your code that you don't want to post it?

You can * out the passwords.

You have code that is using wifi.connect - however you are using wifi.save as well....
The wifi.save saves the current connection and on next restart -automatically connects. This is useful for telnet to the device..

So you don't need wifi.save in your main code.
The way it it working at the moment is

• restart device
  
• it auto connects to the wifi
  
• then you connect to wifi when the connection is already done.
  Perhaps this is why the wifi.disconnect case works.