MQTT authorization now required?

Trying to use test.mosquitto.org/. I get a message saying "not authorized". Upon visiting their page, it says I need to use the cert, even for the unencrypted ports. On Espruino.com/MQTT, it says encryption and authentication are not implemented. So Espruino just doesn't work with the public brokers right now?

Below is the code I was using. Instead I'm using Mosca on local now and I have a working connection.

var WIFI_NAME = "XXXXXX";
var WIFI_PASS = "XXXXXX";

var wifi = require("EspruinoWiFi");

var broker = "37.187.106.16";
var options = {
  client_id : "random",
  keep_alive: 60,
  port: 1883,
  clean_session: true,
  username: "username",
  password: "password",
  protocol_name: "MQTT",
  protocol_level: 4,
};
var mqtt = require("MQTT").create(broker, options);

mqtt.on('connected', function() {
  mqtt.subscribe("test/espruino");
});

wifi.connect(WIFI_NAME, { password: WIFI_PASS }, function(err) {
  if (err) {
    console.log("Connection error: "+err);
    return;
  }
  console.log("Connected!");
  mqtt.connect();
});