Banners and promotional images
Go to " Modules -> Banners ".
It contains a list of positions in which banners are located. They are visually shown (Visualization), their type (Output Page) and size (Banner Size) are described.
You will need to go into each type and replace them with your own ads or delete them. Once the image is deleted, it can be recreated later. (More detailed description in paragraph "Working with banners")