Children can't apply for QR code display on Health Cloud.

The health cloud system shows that the application cannot be repeated because the child has been registered on the health cloud before. However, I have never used this successfully registered QR code for nucleic acid detection. After a long time, I may forget that my child has been registered. In this case, children don't need to register, just look at my order or my registration code on the page, and they can do nucleic acid testing.