There may be several possible reasons for the error display of the Red Sleeves Reading Service: 1. Network connection problem: If the network connection is unstable, it may cause an error when activating the traffic-free service. It is recommended to check the network connection status to ensure that the network connection is normal. 2. Server problem: Red Sleeves Reading needs to interact with the server when opening the free traffic service. If there is a problem with the server, the transaction may fail or an error may occur. It is recommended to try to restart the browser or reopen the Red Sleeves Reading website. 3. Browser problems: If there is a problem with the browser, the transaction may fail or an error occurs. It is recommended to close the browser and reopen it. 4. Other problems: Other problems such as system failure or other technical problems may occur when Red Sleeves Reading opens the free data service. It is recommended to contact Red Sleeves Reading Customer Service for help in solving the problem. If the above methods cannot solve the problem, it is recommended to try to change the browser or contact Red Sleeves Reading Customer Service.