Opening a url is failing in Swift

breakpointing inside the callback and logging success shows false.

I added itms-apps to my plist: LSApplicationQueriesSchemes

and put this in my app delegate:

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
    return true
}

func moreTapped() {
    let url = NSURL(string: "itms-apps://itunes.com/developer/quantum-productions/id979315877")
    if #available(iOS 10.0, *) {
        UIApplication.shared.open(url! as URL, options: [:], completionHandler: {(success: Bool) in

        })
    } else {
        UIApplication.shared.openURL(url! as URL)
    }
}

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