1, personal mobile phone network signal is poor, resulting in no network data connection can not normally display the health code, you can turn on the flight mode for about 3 minutes, and then turn off the flight mode and reconnect the network data to update the information; Or wait for the network to refresh in an open place with good signal, and wait for the health code to display.
2. The health code is bound to my own identity information. If my personal information is filled in incorrectly, I need to fill it in again to display the health code, otherwise the health code will not be displayed normally.
3. Without real-name registration, the health code applet can only generate a health code after the user's real-name registration. If the user is not logged into the health system, the health code cannot be viewed.
4. The platform health code system cannot display the health code, so you can try another way to open the health code. For example, if you originally used WeChat, you can try Alipay or other apps to open it.
5. Another possibility is that too many people used the health code that day, which led to the failure to display the health code, which led to the crowded background and the collapse of the platform. This situation can only wait, and the health code can only be displayed after the background staff has repaired it, but this situation is very rare.