Ahh the I have x amount of years doing this therefore I am incapable of making a mistake argument. I have the plugin running on sites I manage, and locally, and my own little dummy sites all works well and purges appropriately.
Might have been a server issue, might have been a user error regardless someone somewhere is likely to blame ~ but you coming on here and cussing doesn’t help anyone I also saw your review
“WP_supercache is probably a way better option as it generates static HTML files – which is literally the fastest way you can serve content to a user.”
Ok but you do realize that W3TC does generate static HTML files.. Page Cache >> Disk Enhanced open up the FTP wp-content/cache/page_enhanced/all the static html files that you are looking for.