Hi,
i am seeing that you successfully made the custom changes. But you forgot to install and publish the "Flexible - Zoom Effect" module. Please install, and publish it to any position you would like as nothing will be appear in the front-end, but that module loads the necessary CSS and JS file for running the zooming effect.
Make sure that module position you set for the "Flexible - Zoom Effect" module is exist in your joomla template. Usually there are lots of module positions but not all of them are defined in the joomla templates. Use one of "footer, banner, header, left or right" module positions as they are most likely exist for sure.
Flexible Support Team.
If you having trouble about publishing module, create me an administrator account to let me take care of it for you. Send the account info to This email address is being protected from spambots. You need JavaScript enabled to view it. Don't publish it here.