2. In the event details page, find the Subscribe button and click it.
3. On CF cornucopia official website, select the upgrade option and fill in relevant information, such as existing account type and service subscription, select new service type and upgrade price, and promise to participate in the terms of service of CF cornucopia.
4. Pay the upgrade fee of CF cornucopia, and choose the appropriate payment method during the payment process, such as credit card, Alipay or WeChat.
5. Wait for the upgrade of CF cornucopia to be completed. According to the new service type and order quantity, the upgrade time will be different, and it will take several minutes to several hours.