I hope this is the correct subforum, I'm sorry if it's wrong.
I followed all of your suggestions to reduce server load on a WP site. When I installed and set up the suggested plugin, "Super Page Cache" (with cloudflare) it gave me this warning message in the settings: "If you are using Plesk, make sure you have disabled the options "Smart static files processing" and "Serve static files directly by Nginx" on "Apache & Nginx Settings" page of your Plesk panel or ask your hosting provider to update browser caching rules for you."
I am not used to using Plesk and I do not know how to do this. I would appreciate help doing this if it needs to be done, please.