6 demo BO, on the other hand I could not scroll down to bottom of the side menu to accessibility the module. It's because by default the menu doesn't scroll, in order to't see the links towards the bottom. There's a cost-free module available to make the menu scrollable so that https://www.presta-addons-modules.com/en/front-office/prestashop-social-live-chat-support-with-messenger.html