To update the display name of your app, navigate to Settings > App Settings > App.
On the page that appears, scroll to the bottom to select the ‘Edit App Nickname’ button.
Click this button. A pop-up will appear where you can update the app nickname.
To learn how to reorder or hide your apps from this page, see How do I reorder / hide apps & platforms in my Web Support Portal?
To hide or update your app icon, see How do I add an icon for an app that isn’t in the app store on my Web Support Portal?