When you select the ad account, Ads Editor searches several Meta sources to find which Instagram profiles, Facebook Pages and Pixels are linked to it. Green badges with a checkmark mean the resource was found and is already preselected. A red badge means the resource wasn't found. Without a Pixel, the Custom Website section is disabled. Without Instagram or a Page, you need to select one manually in the search fields in each section. You can change the Instagram profile and the Page at any time with the Instagram Account and Facebook Page fields in the corresponding sections.