Reports from PageSpeed and YSlow tell me that the content is not gziped and/or did not expire, what should I do?
WP Rocket automatically adds optimal timeout rules for static files and compresses them using gzip. If they are not applied, it is possible that there is a plugin conflict (exemple: WP Retina 2x). Try temporarily disabling all plugins except WP Rocket and retest.
If this is not conclusive, it means that
mod_deflate are not enabled on your server.
Note: To enable GZIP compression on your server, you can read our documentation: