Trial license code invalid

Hello, I’m new to Swift and macOS, but I’m tasked to research SciChart. I have started my macOS trial, got my trial code from the wizard app. I’m following the Creating your first SciChart macOS App tutorial but I get Sorry! Your license token appears to be invalid error.

Here is what I’ve tried:

import Cocoa
import SciChart
import AppKit

@main
class AppDelegate: NSObject, NSApplicationDelegate {

//    override init() {
//        SCIChartSurface.setRuntimeLicenseKey("XXX")
//    }

    func applicationDidFinishLaunching(_ aNotification: Notification) {
        let licenseKey = "XXX"
        SCIChartSurface.setRuntimeLicenseKey(licenseKey)
    }

    func applicationWillTerminate(_ aNotification: Notification) {
        // Insert code here to tear down your application
    }

    func applicationSupportsSecureRestorableState(_ app: NSApplication) -> Bool {
        return true
    }
}

Using override init() leads to Terminating app due to uncaught exception 'License Exception', reason: ''
Using SCIChartSurface.setRuntimeLicenseKey() in applicationDidFinishLaunching leads to Sorry! Your license token appears to be invalid. Please contact support with your OrderID if you believe this to be incorrect.

What am I doing wrong?