Discount e Coupon not working

-- HikaShop version -- : 5.1.0
-- Joomla version -- : 4.4.9
-- PHP version -- : 8.3
-- Browser(s) name and version -- : chrome

Hi, when i setup a new discount or coupon, in HIKASHOP > DISCOUNT, and i publish it, it doesn't work. Error is "Discount not valid".
A configuration screen attached, please let me know, thanks

Hi,

That "The coupon you entered is not valid" message is the default message when a coupon can't be added to the cart and no error has been returned. This normally should not happen as HikaShop returns an error message specific for each check it does. However, plugins can also refuse the coupon, and they can potentially skip on providing an error message.
Do you use a plugin related to coupons / discounts ? Like AWOCoupon, or our Multicoupon plugin ?
Otherwise, it could also happen with a database issue.
Try to use the "check database" button of the HikaShop configuration. It might help.