Remove the copyright notice Powered by wp-chat.com
2) open settings
Initiate chat with website customers in Live Chat
and specify the seconds on expiration of which the chat window will automatically pop-up on the bottom of the website. 
Text Change in Live Chat 
Where can I change the default "Hello! How can I help you?" into something I want? 
Mobile Chat Apps for IOS and Android
in Google Play market or AppleStore.
White-list Live Chat host to 'mod_security' for an appropriate work of chat
The Live Chat admin panel returns a notification that I use ModSecurity service and have to white-list your site. How can I do it?
Live Chat extension for Chrome browser and desktop notifications
https://www.youtube.com/watch?v=HgmSq2yPEk8
Setup particular operator for specific website 
Yes, it is possible to setup a particular chat operator for a particular website. Follow the guidance below: 
Setup Chatbox position (right / left) from Chat plugin in Wordpress dashboard
- Login into Wordpress dashboard of your website; 
Setup Live Chatbox width from Wordpress dashboard 
and specify the one you need. 
Setup Chat Status Indicator in Live Chat 
- login into WordPress dashboard of your website; 
Delete chats from Archive in Live Chat
I would like to delete messages from my Archive. How can I do it? 
Delete account / operator / admin in Live Chat
in front of the user you want to delete