What you want to ask is what should I do if I don't have a screenshot of my grades? Other certificates can be provided. You can directly contact the customer service of Zhonggong Education for consultation and handling, explain the situation to the customer service, and provide relevant proof materials such as purchase records and payment vouchers for verification and handling by Zhonggong Education. The customer service staff of Zhonggong Education will provide corresponding solutions and refund procedures according to the specific situation.