Hi,
If you read the rest of the messages on that same thread I said:
Note that Joomla 4 already loads automatically font-awesome on the backend. For joomla 3, you would have to add the font awesome CSS file to your joomlate backend template.
www.hikashop.com/forum/2-general-talk-ab...s-and-js.html#300047
Note that with next version of HikaShop (4.2.3), there will be a hidden parameter that you'll be able to set to load it only in the backend by adding an entry with the key "font-awesome-type" and the value "admin" in the hikashop_config table via your PHPMyAdmin.