I guess it's possible that the black ribbon cable has lost contact with the watch PCB in places (it's just soldered on, and sits behind the LCD).
I think at this point it might be better if you send it back and I swap it for a new one?
@Gordon started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I guess it's possible that the black ribbon cable has lost contact with the watch PCB in places (it's just soldered on, and sits behind the LCD).
I think at this point it might be better if you send it back and I swap it for a new one?