🦀🦀 Okta is gone! 🦀🦀

OktaAutologin.user.js

// ==UserScript==
// @name         Okta Autologin
// @namespace    https://github.com/RunasSudo
// @version      0.1
// @description  Automatically log into Okta
// @author       Yingtong Li
// @match        https://monashuni.okta.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    var user = 'USERNAME@student.monash.edu';
    var pass = 'YOUR_PASSWORD_HERE';

    var interval1 = setInterval(function() {
        if (document.querySelector('#okta-signin-username')) {
            document.querySelector('#okta-signin-username').value = user;
            document.querySelector('#okta-signin-username').dispatchEvent(new Event('change', {'bubbles': true}));
            document.querySelector('#okta-signin-password').value = pass;
            document.querySelector('#okta-signin-password').dispatchEvent(new Event('change', {'bubbles': true}));
            document.querySelector('#okta-signin-submit').click();
            clearInterval(interval1);
        }
    }, 100);
})();

Hi! Could you add instructions for running this?
Thanks!