As we use CDN feature of CF for our website, which has both pc and mobile versions.
Some static files are located on different section of server side, but with the same file name and url when someone wants to visit them via browsers.
Let me take an example. Someone could visit pic1 via https://www.xxx.com/root/pic1 both for pc and mobile versions, but on server side, the pic1 of pc and mobile versions are located differently with the same file name but different size. And now, we often could not get the pic1 when we visit it from browsers.
What could be wrong here?