Referral Bonus usually comes with a set of requirements. Please ensure to read through the terms and conditions for referral bonus here: (https://www.shopback.co.th/referral/invite). To check on this from your end, click on Cashback Overview > Click on the bonus entry. You can refer to an example of the criteria as per the screenshot below :
If you have any questions or concerns about using ShopBack, you can contact the ShopBack Help service through friendly live chat agents LiveChat! or through e-mail at ShopBack Help, every Monday - Friday from 8:30 am - 6:30 pm (except public holidays). Hope you enjoy shopping with us!