- The customer sees the pop-up messages as per the country's area. Installation : Action 1: Upload the module zip file from the back-office Module & Services menu tab. Here is some code that I lately wrote. I believe it provides a standard explanation of combining class/ID names with pseudoclasses. https://bookmarksknot.com/story21183814/the-smart-trick-of-prestashop-whatsapp-chat-support-that-no-one-is-discussing