As far as I have check, your Website bydik.com? returns HTTP headers for HTML Webpages:
cf-apo-via: origin, no-cache
cf-cache-status: bypass
cf-edge-cache: cache, platform=wordpress
cf-railgun: direct (waiting for pending wan connection)
cf-ray
...
expiries
pragma: no-cache
x-proxy-cache: miss
x-procy-cache-info: skip_cache_no_cache
For static files like CSS, JS, etc.:
cf-cache-status: HIT
cache-control:
...
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.