How cache all images of my site?

Why 90% of the imagens on my website is not cached? Almost all my site takes more than 1 minute to open the pages…

I want to know how can i force to cache all the imagens to get more speed. Now its almost impossible to navaguete on the site.

Im using “polish” and some others plugins from cloudflare but its not working…

Help please!

My site:

A post was merged into an existing topic: Trouble with Cache Cloudflare