In order for the embedded media resources within an OUP enhanced e-book to load and function properly, you must be using a browser-based e-reader (not a mobile app) and you must have third-party cookies/usage tracking enabled in your browser. Please see this article for instructions on how to check your browser’s settings.
If checking/setting your browser’s settings does not resolve the problem, please Contact Us with your name, institutional email address, and the course title, and we will investigate.