had a quick look at your site (as you mentioned your URL in the JetPack-post) and I think you're not running a page caching plugin. I would definitively advise to install both a page caching plugin (e.g. WP Super Cache, but there are others) next to Autoptimize.
Regarding Autoptimize; as you are (or your theme is) using jQuery, you might have to enable "force in head" and/ or "look only in head". sometimes jquery just has to be excluded from being aggregated & minified.
frank