According to your description, I suggest you try the following methods:
1. Pull down the screen top curtain and click "Clear".
2. Turn off the phone and restart it.
3. If you want to cancel this advertisement and not show it on the top screen, please drop down the top screen and click the display of this advertisement for about 2~3 seconds, and a list will appear. Click "Application Information" in the list that appears-just uncheck "Show Notification".
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