Steps to rename a Vaandroid application.

Rename manifest package from <old> to <new>.

Refactor package name from <old> to <new>.

Update Kotlin/Java include references from <old> to <new>.

Update the application name in string resources.

<resources>
    <string name="app_name">My Application</string>
</resources>

Quit IntelliJ

Android Studio will not let you rename a project folder while running.

Rename project folder from <old> to <new>.

Restart IntelliJ.