Ionic Appflow live update does not update

Question

I am trying to use Ionic Appflow to do live update for my Angular-capacitor app. I have followed the documentation here: https://ionic.io/docs/appflow/quickstart/deploy.

I installed the Appflow SDK to my project with this command line:

ionic deploy add  
    --app-id="My_APP_ID" 
    --channel-name="Production" 
    --update-method="auto" 

As the document says, it will listen to the "Production" Channel for changes and apply them to the app during the splash page.

Then in Ionic Hub (https://dashboard.ionicframework.com/) I deployed a newer version of my app with changes to the production channel.

This picture shows what I changed in the code, it was just changes of the theme Color.

enter image description here

enter image description here

After close and open my app in the emulator for serval times, no changes has been applied.

here is the list of packages versions

"@angular/animations": "~10.1.1",
"@angular/cdk": "~10.2.0",
"@angular/common": "~10.1.1",
"@angular/compiler": "~10.1.1",
"@angular/core": "~10.1.1",
"@angular/fire": "^5.2.1",
"@angular/forms": "~10.1.1",
"@angular/material": "^10.2.0",
"@angular/material-moment-adapter": "^10.2.0",
"@angular/platform-browser": "~10.1.1",
"@angular/platform-browser-dynamic": "~10.1.1",
"@angular/router": "~10.1.1",
"@capacitor/android": "^2.4.2",
"@capacitor/angular": "^1.0.3",
"@capacitor/core": "^2.4.2",
"@capacitor/ios": "^2.4.2",
"@ionic-native/core": "^5.28.0",
"@ionic-native/google-plus": "^5.28.0",
"@ionic-native/insomnia": "^5.28.0",
"@ionic/angular": "^5.3.5",
"cordova-plugin-googleplus": "^8.5.1",
"cordova-plugin-insomnia": "^4.3.0",
"cordova-plugin-ionic": "5.4.7",
"cordova-plugin-whitelist": "^1.3.4",
"firebase": "^7.22.1",
"howler": "^2.1.2",
"moment-timezone": "^0.5.31",
"rxjs": "~6.5.4",
"stripe": "^8.15.0",
"tslib": "^2.0.0",
"zone.js": "~0.10.2"

Does anyone have any idea why the app is not updating? There should be no code required right? Just the correct setup.