Why can't WeChat health code be used?

The health code cannot be used for the following reasons:

1, the health code cannot be scanned. Maybe there is something wrong with the system or network. You can wait for a while, or try another mobile phone network.

2. It may be because the health code is invalid and cannot be scanned. Click "Update Now" on the QR code to refresh. In addition, by default, the health code is valid for 7 days. The health code has expired, and you need to declare your health again to get it again.

(WeChat) is a free social program launched by Tencent on 20 1 1, which provides instant messaging service for intelligent terminals. It supports fast sending of free voice messages, videos, pictures and texts across communication operators and operating system platforms. At the same time, it can also be used by * *.

Provide public platform, circle of friends, message push and other functions. Users can add friends and follow the public platform by "shaking", "searching for numbers", "people nearby" and scanning the QR code, and share the content shared with friends and the wonderful content seen by users to the circle of friends. By the end of 20 16 and 12, the number of monthly active users reached 889 million.