Unable to import demo content

Hello There,We are facing an issue while importing demo content in our website which has Madang as active theme. All recommended plugins are installed successfully, then I moved to create content, in this window I have created all pages but now my website is not showing proper layout. And the 'Create Landing Pages' option is disabled we are unable to move forward with such layout. Please provide demo content file or give us proper solution as soon as possible.Thank You.