I already tried anything with the help of the MAX CDN support team. No way to pull the files from the content folder for subdomains. It does not work so far. Only the mainsite works fine. Max cdn checked all my Plugin and max cdn setting - nothing wrong.
Now the plugin is activated network wide - i tried also other ways - for example set up for each site separatley - it dont work. I will only use one max cdn pull zone for the hole mutltisite. Max Cdn means that it is a plugin problem - normally it should work fine.
In my opinione its also a plugin Problem because as you know the multisite uses the same wp installation / folders! Again - it is a multisite with subdomains NOT subfolders!!!
Would be awesome if we can solve this issue asap.
Thank you so much