Can you past the exact script you are placing there ? I am not very familiar with typo.
I did find that focus items were not working with the exact code generated from Mautic, sometimes you might need to add /index.php and make sure it is a full URL including https://
I have written a small blog post on a similar issue I had with Wordpress, maybe it can help. check it out here.
One typical suspect would be that you’re mixing http and https (I think that’s what @mikew was hinting as well)
If that’s not the case, I’d suggest
a) look at the page source and verify that the script is actually present
b) Open your browser’s inspector and reload the page, watch for errors in the console