This type of code is fully functional and supports all features offered by Provide Support. However, it supports only Modern Chat Window type. If you still use Classic Chat Window type you can switch to the modern one on the Account Settings / Chat Window Type page. While using Modern Chat Window, you will be able to customize its look and feel, change size and even chat button position on your website.
If you still would like to use Classic Chat Window, please contact our customer service team and we will provide a workaround.