You can complain. Click on a complaint below through the health code page, and then you can revise it again, or you can go to a local conditional place to help you update it again.
You can also enter the health code through Alipay, click the appeal button, fill in some facts, and then upload the test report. Those who come back from the trip had better upload the reserved tickets. Review will take some time, please be patient. If you fail, you will also be told the reason.