Hi Red,
It will work as it is, that’s more of a recommendation since you used the Asynchronous tracking code, which is recommended to be placed as they say.
This type of code doesn’t affect page load as regular tracking codes, so it’s advised to be put there in the top of the document because it’ll start tracking slightly faster than regular code. If your site speed is fine, it won’t make a big difference, so you can leave it as it is.
If you really need to place it as they recommend, you can go to Appearance/Editor and edit the theme’s header.php file – that’s where you’ll find that head tag mentioned.
Regards,
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Cosmin – Support