Change your cover image in News Publisher
Your cover image appears in the Discover view in older versions of News: iOS 16, iPadOS 16, macOS 13, or earlier. You can change your cover image only if you previously uploaded a static cover image.
A static image is one you upload. It doesn’t change unless you upload a different image.
A dynamic image is taken from your channel content and changes automatically from time to time.
Go to icloud.com, sign in, then click News Publisher.
Go to Settings > Branding > Cover Image.
Click Replace (below the field), navigate to the image, then add it.
Important: For your cover image to appear in News, it must adhere to the cover image specifications.
Click Save.