pnims However, as a test I downloaded the latest T4 Blank and it did not solve problem with Paldesk Chat
Hi
After checking this issue i noticed the issue is Chat plugin you are using is built for Joomla Article content only. Its a content type plugin that will load only where Joomla article type menu used.
So tweak this i added blank custom html module on footer position and allow the load content plugin. Now you will see the chat box on the Hompage as well
Further you can use T4 blank template as well. i applied some changes in the layout so it will match your older style http://prntscr.com/uvvxr8
For custom css change you need to apply them in T4 blank template as its different template compare or builder template you were using.
Hope its solved now.