If you found your WeChat health code not working recently, you’re not alone. The Tianfu Health code (天府健康通) used in Chengdu and other cities in Sichuan province system had an upgrade, please follow the steps down here to reactivate:
Step 1: Access the Mini Program
Scan the QR code below 
Step 2: Sign Out
Click the tab above the QR code that shows your name, phone number and part of your passport number (that keeps you signed in) > Click “Log Out”.
Step 3: Declaration
Scroll down > click “Declaration entry for foreign nationals, Hong Kong, Macao and Taiwan residents”
> Select English language
Step 4: Login
Fill in your information > Start certification
Step 5: Authentication
Click the green button meaning “I have read and agree…”
> “Authentication Failed”
> Select ‘Entry-exit’ down
> “I agree that”
Confirm
Step 6: Your updated Health Code should appear
(fingers crossed its green)
If that doesn’t work..
Change the system to Chinese language in the left upper corner and contact their customer service “我要咨询” (Chinese only).
If that doesn’t work, you can try with Alipay..
If you have to re-enter your information, choose for address:
-Si chuan sheng
-Cheng du shi
-the district you live in
If you haven’t registered yet..
Image: How to obtain the Tianfu Health Code
When you enter the application page, you will see a special note of your declaration, which states that the information provided by foreign nationals is voluntary and not mandatory; and the information provided is only used for the prevention and control of the COVID-19. Users can select the language in the upper right corner, and proceed to the next step by clicking Next.
Note: name and ID number must comply with one’s ID documents.
After being filled, the information proceeds to be reviewed. Within 24 hours the review will be processed. For the declaration that is not complete and fails the review, there will be a hint to redeclare.
Once the declaration is successfully processed, you can log on the Mini Program to see the Code, whose colour is classified according to health standards. Health information below the Code can be updated by the Code owner while the name and ID Number cannot be changed. Health information can be updated for only once within 24 hours as to avoid malicious manipulation.
