My site works fine for images and content that comes from the "default" folders. But it does not work for anything that needs to be listed in the "custom files list".
I created two identical sites to demonstrate the issue. The only difference between the sites was that one was not at the root level. That site did not have the URLs updated for the CDN.
BTW. Remember to check the source code of the pages. That's the most reliable way to determine if W3TC is properly replacing the local URLs with the CDN URLs.