It's important to note, that ShutterSnitch does not "extract" anything. It accepts uploads. It's up to the card to send the files.
If "Accept only JPEGs" is turned on, ShutterSnitch will just tell the card "sure, I received the whole file, thanks", when the card tries to send it.
So if you don't see a "Receiving.." info in ShutterSnitch, I'd say your card is not set up to send RAW files.
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