First, make sure your browser is loading the latest images for each page, or it may keep showing you the images it already saved (cached) from your earlier visit. You can either clear your browser's cache manually before reloading the page, or hold the Ctrl key while you click the Refresh button to force the browser to reload the latest images fresh from our server.
If that still does not show you the newest images, make sure the replacement images you are uploading all fit within the size limits we describe in the image Uploader window.
