Slider problems

Hey there,

we are creating a new Website, it’s a very important school project for our A-Levels.
We want to add a slider in the header of our Satori-Child-Theme. For this we used the recommended plugin “Meta Slider”, but it doesn’t work. When we insert the shortcode of the slider we created, there was just the picture and no main menu or content. Everything else was gone. What should/can we do???

We would be pleased if you could answer as soon as possible.

The desperate ones

The page I need help with: [log in to see the link]