My health code turned yellow in two days. What should I do?

"red team banned, yellow code restricted, green code passed". If it is not a green code, find out the reason and issue relevant certificates before passing. The solution is as follows:

1. First, in the mobile phone, click to open Alipay app, as shown in the figure below.

2. Click and select the health code after entering Alipay, as shown in the figure below.

3. Then click View Now at the bottom of the page, as shown in the figure below.

4. After entering the health code, click the information below to make changes.

5. Fill in the information again after input, and then click the bottom to reactivate the code. As shown in the figure below, the yellow code can be replaced by the green code.