As far as I have check, your Website bydik.com? returns HTTP headers for HTML Webpages:
cf-apo-via: origin, no-cache
cf-edge-cache: cache, platform=wordpress
cf-railgun: direct (waiting for pending wan connection)
For static files like CSS, JS, etc.:
The difference could be regarding the html pages because of Dynamic vs. Static cache on Cloudflare, which you can set to cache “Everything”, but hopefully you need to setup your Page Rules if you want to use that and there could pop-up some more issues if not configured correctly.
You are also using APO for WordPress, and some other options like Railgun, etc.
Moreover, as far as I see you are using Jetpack?, because your static files are served via wp.com domain.