Copy the discount code from the product page,and then apply the discount code at check out.
No.Discount codes cannot be combined. Only one code can be applied per order.
1）The discount code is not applicable to the specific items you want to buy
2)The discount code wasn't entered correctly
3) The discount code has expired
4) The discount code is not from CASIRIS's official website
If you have any questions,please feel free to reach out to our customer service team: firstname.lastname@example.org