Hi,
It is the option "After a product is added to the cart" ("Après l'ajout d'un produit au panier").
You have to set a time for the popup display time ("Temps d'affichage de la popup de notification") which is configured in milli seconds.
If this time is too short, you will not see the popup appear and disappear.
www.hikashop.com/en/support/documentatio...onfig.html#main_cart
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.