Chat window does not appear on the website. Exact steps how to make it work.
- Check your webpage if the chatwindow has appeared.
Remove the copyright notice Powered by wp-chat.com
2) open settings
Step-by-step guidance how to change User Name and Operator Name for chatbox in Live Chat.
- Save/Update.
Integration methods for better work of Live Chat. 
- 'Integration method' and select 'external' or 'internal';
Hints how to solve "Error connecting to server secure.wp-chat.com".
1) check if you use any security plugin on your WordPress website. If yes, switch it off and try to use the Chat;
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 
4) Save Changes 
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=PN