I am working on a Flutter project and recently updated my iOS bundle ID from com.example.myappid to com.mycompany.myapp. However, I'm facing an issue where this change is not being reflected in App Store Connect.

The app have never been uploaded on App Store Connect before, and I am trying to add new app.

Here are the ways I tried:

1. Changed the bundle ID in Xcode.
2. Cleaned and rebuilt the project in Flutter.
3. Remove old Identifier and create new one

Despite these steps, the App Store Connect page still shows the old bundle ID. I am looking for guidance on how to ensure that the new bundle ID is recognized by App Store Connect.

NOT TRYING TO CHANGE ALREADY UPLOADED APP ID, I AM TRYING TO ADD NEW APP. And in the Bundle ID dropdown, new ID doesn't appear.

Tried to create an Identifier myself, but it shows An App ID with Identifier <id> is not available. Please enter a different string..
the id is TOO UNIQUE, so I don't think it's already taken, but is there any way to check whether it's taken?

Is there a step I'm missing or a common issue that could be causing this?

Any insights or suggestions would be greatly appreciated. Thank you!

The problem solved

Since the ID was registered in my personal account but I didn't upload the actual app, I was able to register the ID normally in my company account after it was deregistered from my personal account after the expiration date.