Adding ad units to a site

Hi,

We are working with an ad network and would like to implement their banners at our website https://www.opskriften.nu/. I have added this script in the header:

And I have implemented two scripts in the body through this guide:

The scripts look like this:

But the banners are not being shown - the spaces on the front page are just empty. Can someone help me check, if I have done it right or if there is another way to implement ad units without using adsense?

Thanks

Now I have added them as a custom code, but I don’t know how to place the banners the right places.