We'll create fresh WordPress site with WordPress Messenger Customer Chat Plugin (WPMCCP) installed. You have 20 minutes to test the plugin after that site we'll be deleted.
Facebook recently made available in open beta their Messenger Customer Chat Plugin which allows you to integrate your Messenger experience directly into your website.
This plugin just makes it easy for you to add this on your website by just putting your Facebook Page ID and whitelisting your domain on your Facebook Page.