1, the health code is black, indicating that the health code applied by the user is under review, and the normal health code color can be displayed after the review is completed. .
2. Due to network and other reasons, the health code image was not refreshed. Click the refresh button to try to update the health code color.
3. The user who applied for the health code failed in authentication or verification, and the user needs to be re-verified, and the normal color of the health code can only be restored after passing the audit.
4. Print health codes and display fonts and patterns in black ink. The natural color is also black, but as long as the information on the QR code of the health code is correct, you can use it with confidence.