Thanks again. This is strange because I don't have issues with other metadata providers (Goodreads, Amazon etc.), but of course I use these to search metadata for English books, not Hebrew. I haven't made any changes to my network connection and I'm not using VPN. But I did try on another machine in my network and got the same error. I should mention that the plugin did work for me before, I think it had stopped working for me since the latest Calibre update (7.1).
I guess I'll have to keep investigating, but I'd appreciate any advice you might have to give.
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