To integrate live chat extension on Prestashop Store here I like to refer eAssistance Pro. To integrate that plugin on your website follow the simple given steps below -
1: Download the Prestashop Plug-in
2: Login into your prestashop administration and go to modules
3: Select "add a new module"
4: Browse eAssistancePro.zip file from the compter and click upload the module >> click install
5: Click 'Configure'
6: Login into your eAssistance Pro account and copy the chat code from https://support.eass...code/wizard.php and paste it in the text area
7: Select your position Left, Right or Floating
8: click on the save setting
For more help one can visit https://www.eassista.../prestashop.php