1. Bad network signal or system failure. Personal information is required to make an appointment for a health certificate, including key information such as ID number and photos. If the network signal is bad or the system is out of order, you may not be able to upload information normally, including ID photos.
2. The ID card is expired or does not meet the requirements. If the ID card expires or does not meet the relevant requirements, it may also cause the photo of the ID card not to be displayed normally. In this case, you can try to re-upload the photo of the ID card that meets the requirements, or update the expired ID card.
3. The system itself. Sometimes there may be some problems in the health certificate reservation system itself, such as system failure or data transmission error, which may also lead to the inability to display ID card photos.
If you encounter the problem that the health certificate appointment ID card does not display photos, you can try to upload the photos of the ID card that meet the requirements, update the ID card or check the network status. If the problem has not been solved, it is recommended to consult the relevant health certificate appointment service hotline or customer service for more specific guidance and help.