1. Click the know-it-all APP on your mobile phone to enter.
2. After the page jumps, enter the interface of Know-it-All APP and click Me in the lower right corner.
3. Enter your account and password in the login interface that appears, and then click Login.
4. After the page jumps, log in to the homepage of Know-it-All APP and click on the Ankang code above to enter.
5. You can see your own Ankang code in the page that appears, and click Manage Family Members under Ankang code.
6. You can see the health codes of family members in the page that appears. Select the health code that needs to be deleted, and then click Delete Member.
7. After the page jumps, you can see that the health code of family members has been deleted.
8. Click the Add New Member button at the bottom of the Manage Family Members page.
9. After the page jumps, re-enter the previously deleted family member information in the dialog box that appears, and click Next.
10. At this point, after the page jumps, you can see in the family management interface that the previously deleted personnel Ankang code has been retrieved and added successfully.