if you want a laugh, here’s the latest feedback after Facebook support did such a great job explaining that someone cares: Thank you for your feedback and patience.
After checking the script you provided in the discussion forum, it looks like this is HTML code with javascript tags.
Because of this, you would need to put this code into an HTML element, as explained here on the pages where you want it to run.
Alternatively, you can add it via your dashboard, see instructions here.
We apologize for the previous confusion and ask you to let us know if you have any further questions regarding adding the script.
Otherwise, I hope I could help you further and I wish you good luck and a pleasant week. 