It seems that when I don't have the Debug Mode "On" for Page Cache, page caching actually works.
However, now I've got a front page that is stuck with old content and if I publish new posts, they don't show up anywhere. The page is loading lightning fast, but I do need the new content to show up, and I've tried empting the whole cache (on the plugin settings and also on my browser) and even disabling Page Cache. Nothing changes.
Help?