1. Wait a moment and try again. Sometimes the reservation system may be paralyzed because of too many visits. In this case, you can try again later.
2. Try to use other browsers or devices to make an appointment. Sometimes, a particular browser or device may encounter technical problems. If you are using a mobile browser, please make sure that the network connection is normal.
3. If you still can't complete the appointment, you can directly contact the local health department or Chongming Chengqiao Town Health Service Center. They will provide more guidance and help.