protractor setup for crossbrowsertesting.com

conf.js

exports.config = {
  
  // change this to your USERNAME and AUTHKEY
  seleniumAddress: 'http://USERNAME:AUTHKEY@hub.crossbrowsertesting.com:80/wd/hub',

  capabilities : {

    name : 'protractor test', // this will show up in the UI
    
    // these are important :)
    browser_api_name : 'FF31', // change this according to what browser you are using
    os_api_name : 'WinXPSP2-C2', // change this for the OS you are using
    screen_resolution : '1024x768', // change this for the resolution
    
    // 
    record_video : false,
    record_network : false,
    record_snapshot : false,

    // change this to your USERNAME and AUTHKEY
    username :  "USERNAME", 
    password : "AUTHKEY"

  },

  //
  specs: ['todo-spec.js']
};

Hello,
I am trying to run my tests in my xbrowsertesting account but this following error is displayed after run my test:

"C:\Program Files (x86)\JetBrains\WebStorm 10.0.4\bin\runnerw.exe" "C:\Program Files\nodejs\node.exe" C:\Users\bcunha\AppData\Roaming\npm\node_modules\grunt-cli\bin\grunt --gruntfile C:\DeltaBravo\document_cloud_ui\Gruntfile.js protractor:continuous
Running "protractor:continuous" (protractor) task
Using the selenium server at http://email:pass@hub.crossbrowsertesting.com:8080/wd/hub
[launcher] Running 1 instances of WebDriver

C:\DeltaBravo\document_cloud_ui\node_modules\grunt-protractor-runner\node_modules\protractor\node_modules\selenium-webdriver\http\index.js:145
callback(new Error(message));
^
Error: ECONNREFUSED connect ECONNREFUSED

Here is my protracto,config file:

var helper = require('./helperFirefoxProfile.js');
exports.config = {
//getMultiCapabilities: helper.getFirefoxProfile,
seleniumAddress: 'http://mymail:mypass@hub.crossbrowsertesting.com:8080/wd/hub',

specs: ['test/e2e/features/EmployeeDocuments/UploadDocuments.feature'],
framework: 'cucumber',
chromeOnly: false,
capabilities: {
    name : 'Selenium Test Example',

    browserName : "firefox", // <---- this needs to be the browser type in lower case: firefox, internet explorer, chrome, opera, or safari
    browser_api_name : 'FF39',
    os_api_name : 'Win7x64-C1',
    screen_resolution : '1024x768',

    record_video : "false",
    record_network : "true",
    record_snapshot :  "false",



    username : "mymails",
    password : "mypass"

},
jasmineNodeOpts: {
    showColors: true,
    defaultTimeoutInterval: 30000
},

cucumberOpts: {
    require: 'test/e2e/features'
}

};