No 'Access-Control-Allow-Origin' header is present on the requested resource - greyed images

Hi there,

please help me. I have 9 website that proxied trough CF.
when proxy disabled every picture loaded fine, but when i turn it on, for example in my broswer everythings fine, but many readers report there is no images on website, everything is greyed out.

example website: A
get static images from: static.B

i use Dr.Flare-s chrome extension to see which picture is loaded fine, but when i hover the cursor one of that picture i get these error:

Access to XMLHttpRequest at ‘static.B’ from origin ‘A’ has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.

but int he response header there is a access-control-allow-origin: *

any advise very appreciated.

THX

more info:
rocket loader - off
mirage - off

only Polish enabled with lossy and webp

Any advise?

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