Unfortunately here in the forum there is a previous version of this extremely useful module but it was only compatible up to PrestaShop 1.7.x so I have modified it by updating some parts of the code that prevented it from working with PrestaShop 8 such as tools::jsonencode and tools::jsondecode ...
With this modification I have it working in Prestashop 8.1.5 with PHP 7.4 but it should work fine with Prestashop 8.1
If you are interested, I give you the module with this modification so you can use it in your stores with Prestashop 8.x.
Now if someone uploads the actual updated version, welcome, but I've seen the demo of the current version and it's exactly the same so I guess the developer just updated certain deprecated features like I did.
Provide your customers with high-quality support by integrating the Helpdesk ticketing system into your PrestaShop store. Receive customer queries and issues in the form of tickets. Create multiple agents & groups and assign tickets to them.
addons.prestashop.com
Version 4.2.1 modified by RicRey for Prestashop 8.x
Link Module:
https://addons.prestashop.com/en/support-online-chat/22848-help-desk-online-customer-support.html
Link Forum Original Max PS1.7:
https://www.nulledfrm.com/threads/help-desk-support-ticket-module-for-prestashop.65650/
Changelog RicRey:
I updated the deprecated function of: Tools:jsonEncode and Tools:jsonDecode