I’m using WordPress APO on pro plan, and not using any caching plugin at the origin.
Yet, various resources are with
cf-cache-status: EXPIREDheader, which means they are served from origin as described here.
The main HTML file is served with
cf-cache-status: DYNAMICheader, which is again served from origin as well.
How to maximize HIT serving in these cases?