So, in the future:
When making configuration changes CLEAR CACHE and Turn it OFF in the ADMIN panel
Use the correct IP address for FTP access
You apparently have made some changes in your hosting account
You have a "ghost copy" that looks ALMOST the same, but it is an entirely different set of files that are NOT PUBLIC, NOT ONLINE
126.96.36.199 is where your site is actually located
You will have to re-install W3 Total cache again if you want to use it.