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I can't even see my own screenshot at this reply... :-(

Please right click on the broken images, open in new tab. Will it display the image? Error message?

CAn't find IP address of: steemit-production-imageproxy-upload.s3.amazonaws.com

Try other browser. If the same, you got a network problem (router, firewall, dns etc.).

Thank you very much alf!

Could you solve it?

You know one strange thing? I discovered that I do see videos, I've seen posts that are full of images and videos and I can only see the videos (youtube).