This seems like a cool idea for one of these "don't cross the lines" sort of puzzles. Loved the whole atmosphere. The interpretation of the jam theme is clever, but I don't really see how it fits into the game outside of the text on the first screen... Maybe I didn't play long enough.
I wonder if the issues folks have with right clicking are just not realizing that you must select the victim's pin first. I thought that right click must also be broken for me too, until I looked at the source code and deciphered what was going on there. Technically this information is available in the question mark thing, but I feel like it's buried and not stated strongly enough. Also, I just don't really see why that would need to be the case.
The control scheme is very awkward for me. Left clicking for everything would make more intuitive sense, IMO. Left click and drag the card to move it. Left click and drag the pin to connect string. Drop the thread on the board or right click the pin to disconnect it. Maybe a custom cursor when hovering over various things would help.
I'm on a macbook and right clicking worked fine in the web build and native build (from source), once I figured out how to do it.