I don’t know if you got me right. I did not add a line of code from google, only the Site Kit by Google plugin does it automatically, there is no header ad in the adsense preview, it is just below the content above the footer and I want it to be like that, but on the page it happens as you see, i.e. the advertisement is in header.
So, am I to understand that the problem is unsolvable and that I will have to opt out of the automatic ads and add them manually? :c