Why is the gold border of the health code missing?

At present, after moving from one city to another, due to the changes in urban areas, when I opened Alipay's health code, I found that the original green code was missing. How can I find the original green code? Details are as follows:

1. First open the Alipay homepage to find the health code, and click Open.

2. After input, select the region and click Hebei Province.

3. Click View Now on the page, as shown in the figure below.

4. Finally, click Show Health Code in the upper left corner. After COVID-19 vaccination, the health code will have a golden border. (Some areas have it, and some areas don't).