Hi, is there anything new on this topic? I have the exact same issue on my website. It helps to add ?sdadasdsad, but – of course – it doesn’t solve the problem. Caching serverside was previously turned on, but now it has been turned off and it doesn’t help at all. There is no caching in WordPress. I tested the images through different web browsers and also in incognito modes.
I know, your plugin is great, because I used it previously on another web page, so I’m looking forward for it to work (someone turned on a plugin that compressed all the images in a non-acceptable way, without a backup, so I need to replace over a hundred of them manually…).
We will be looking into it on our server, maybe there are some more issues serverside. But if you had any more ideas, what we can check etc., it would be great.