Hello, would you please provide me a screenshot to show the sider image you mentioned? Thanks!

Sure.
My side – http://www.blaechschaade.ch.
Screenshot — http://www.blaechschaade.ch/wp-content/uploads/2015/08/image1.jpg.
Thanks for your help.

Hello, I’m still not sure where is the sider image. It seems that there is no sider image on the screenshot you provide.

Hi, the following pictures in have added to the homepage background Images for the slider module.
http://www.blaechschaade.ch/wp-content/uploads/2015/03/D1X_6437_1183.jpg
But i can’t see the pictures on the full screen. I see only a small light red pieces.

Additional info — Admin homepage Settings
http://www.blaechschaade.ch/wp-content/uploads/2015/08/image2.jpg

Hello, do you want to remove the red overlay? If so, please insert the code “body:after { background: none !important; }” via Theme Panel-> Custom CSS.

Hi Kevin
no – i would like the complete pictures on the full screen like your demo side. Sorry for my english.

Hello, I try to understand you. Did you add Header Slider Boxes? It seems that no content for the slider boxes.

Yes. – i have 2 header slider boxes with content and button. Box name slider 1 and slider 2.

Hello, please provide me the access to your WordPress dashboard (admin role) with Private Message, I’ll try to help you.

Hello, it seems that the plugin ReFlex Gallery you installed has a conflict with the theme. Just deactivated it, the slider will work.

Hi Kevin
many thanks for your support. the theme looks like very good.
Best regards
roland