Too many people use the health code, resulting in access congestion, health code backend can not provide information in time, so the crash is not displayed. At this time, you can go to other platforms to check the health code, such as WeChat, Alipay, and local health code WeChat official account.
Kangma is a personal QR code based on actual real data, which is generated by citizens or people who have returned to work on their own online declaration and background audit. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city.