How to upload a new version of App to Expo Builds?

I have been working on my first React Native App using Expo and I am now trying to deploy it. I followed these instructions https://docs.expo.io/versions/latest/distribution/building-standalone-apps/#2-configure-appjson
and I was able to upload my app on my Android Emulator. I would like to know if it’s possible to upload a new version on the Expo builds since my app is not working as expected. I tried to publish a new version ('expo build:android 'or 'expo publish --release-channel ') but I ran into this error: connect ECONNREFUSED.

Is there a step by step process to upload a new version of an App?

Is it normal that my app is behaving differently (no error when I am using the command line (expo start) Vs can’t use the Google SignIn function when I start the App directly from the Android emulator)?

Here is my expo diagnostic Log:
Expo CLI 3.9.0 environment info:
System:
OS: Windows 10
Binaries:
npm: 6.10.2 - C:\Program Files\nodejs\npm.CMD
IDEs:
Android Studio: Version 3.5.0.0 AI-191.8026.42.35.5977832