What should I check if an SW Header Simple background image is missing?

First, identify whether the image should fill Module Outer, the full-width header bar, or Module Inner, the content row that holds the logo, navigation, and buttons. Open that layer's background settings, confirm its background option is set to Image, and verify that an image file is selected. Preview the header, then publish the global content and check the live page. If a previously saved image disappeared immediately after a theme change, stop before overwriting the setting and contact Smithworks so the saved instance can be checked.