When creating a landing page, emfluence allows you to assign a Failure URL which will redirect someone hitting the landing page after it has been deactivated. You also have the ability to set a Global Failure URL within the platform. Located in the Options menu under Page Settings, simply paste or type the URL (make sure it is the full URL including https://) and Save. Any page without an assigned failure URL when deactivated will use this one. Failure URLs assigned to specific landing pages will overwrite this default.