Ich möchte AdSense-Code im headfcnf29ffe4bedfefce4e4bce4e4e4e4e4e4e4e4e4 in das -Tag ffcr ein Active AdSense Konto

You can add any code by making a theme component.

From the admin panel > Customize > Themes > Components > Install > Create new.

You can read more on how to work with Theme Components here:

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