Obviously it must be the same: going from TheExample to theexample isn't the same thing.Yes, just make your SKlauncher account and when it asks for a username you type the same username you had in Other Launcher.
In your Java build - JavaFX library is missing.This application requires a Java Runtime Environment.Can I install SKlauncher in another folder?.I'm a Linux / macOS user, what should I do?.Can I migrate my Other Launcher account to SKlauncher?.