How do I close the Apple Calendar when I receive a yellow advertisement?

The closing process for Apple Calendar to receive yellow advertisements is as follows:

Operating tools: iPhone 12Promax, iOS 14.4, settings 1.0 1.

1. First, open the settings of Apple's mobile phone, as shown in the figure below.

2. Then click Privacy, as shown in the figure below.

3. Pull the page to the bottom, and click Apple Advertising, as shown in the figure below.

4. Set the switch button behind the personalized advertisement to the off state to stop the junk advertisement, as shown in the figure below.

Note to Apple users:

Apple is very strict about system security, and there will be no advertisements, but there will be advertisements in all kinds of software. If there is a problem that the yellow advertisement indicates that the software is being used, please consider replacing it with other software of the same type.

Secondly, it may be the problem of wireless routing at home. Because the MAC will not be poisoned, it is estimated that your computer was hijacked by the pointing address, which led to the pop-up advertisement of the route. Therefore, I suggest you reset it.