Need to add script to and

Hey schwabino,
I would wrap your code in this and add this code to the end of your child theme functions.php file in Appearance ▸ Editor:

function custom_script() { ?>
  <script>

//your code here

  </script>
  <?php
}
add_action( 'wp_head', 'custom_script', 99 );

Best regards,
Mike

Hi,
If you are not using a child theme you could use the WP Code plugin then add a new snippet, in the top right corner use the PHP snippet as the code type:

then add the code and save.

Best regards,
Mike

Hi,

Thank you for the update.

then added the code where you told me too – but then it says this?

What does it say? Do you get any errors? Please provide a screenshot or provide the site URL in the private field. The link below should help.

// https://www.analyticsmania.com/post/how-to-check-if-google-tag-manager-is-working/

Best regards,
Ismael