Conversion Support lets you live chat with website visitors from mobile and web.
Download the ConversionSupport.zip from wordpress and upload the zip file under plugins -> add new -> upload plugin.
Activate the plugin.
Once the plugin has been activated, go to Settings > Conversion Support.
On the plugin options page, click on 'Sign into Conversion Support'.
This will open Conversion Support's web console on a new browser window. Login to your Conversion Support account, go to the settings tab and copy the URL listed under the 'WordPress Plugin' section.
Fall back to your website's WordPress administration area and paste the URL under 'Conversion Support Chat Options'.
You can also install Conversion Support's WordPress plugin from an FTP client, as some webmasters may prefer. To install the plugin from your FTP client, login to the FTP account of your web host and upload the plugin folder to the /wp-content/plugins/ directory. If you do not find the wp-content folder in its default location, please check the wp-config.php file in your site's root to know the location of wp-content directory.