Not returns cached version

Hi, i have updated wp to 4.4.7, Installed WPFC, made all settings, but plugin returns not cached version. On another site plugin includes text in the end of body, that page is cached and time for it. On my site i have no text in the end of body.

But on FTP in /cache i see /all, where are cached pages and /wpfc-minified with styles.
Google speed Insights says, that i have 4 minified styles, also gzip compression and another. This works, but cache – not…because i have a long loading page with map, and with active WPFC it loads also long, as without WPFC.

How can i solve this problem?