Because the mobile phone network is not good, the health code declaration needs the network, and the network is not good, which leads to no results.
Too many people used it, and the circle didn't come out at the peak.
The problem with mobile phone software is that it is too stuck or the software is not smooth, so it will turn.
The health code has been circled, indicating that it cannot be loaded.
It's usually a network problem. You can switch to mobile traffic and reload. It may be that your mobile phone software has a small memory, which causes the phone to get stuck. Then, there are many people around who use health codes at the same time, and the system is at its peak and loading is very slow.