Firefox add-ons are disabled for cup.aihedy.com by a limitation from the browser itself. As for offer.ebay.com, for me it is a redirection to another page where the URL does get embed in the title bar.

If this doesn't work for you, please open a bug at https://github.com/cloutierjo/titleUrl/issues and we can work out why it is not working in your case.

Regards