Hi @ulf01 ,
In LifterLMS, the ability to modify the course layout via Appearance > Customize can depend on the theme you’re using. Some themes, like the default WordPress themes or the Sky Pilot theme, include LifterLMS specific settings for layout adjustments. If you’re not seeing LifterLMS options in the Customizer, I recommend checking if your theme supports these settings.
LifterLMS also offers the LaunchPad Theme, which provides customization options for course layouts. You can learn more about customizing it here: LifterLMS LaunchPad Theme Customization.
To switch the sidebar on or off, you may need to look for layout options in the theme settings. Alternatively, you can achieve this through custom CSS or by switching to a theme that offers built-in support for LifterLMS layouts.
Please let us know which theme you are using so we can replicate the issue and provide more guidance.
All the best,