So theres an error on the pcb? join the pins with wire and see if it works ok.Now I have been playing & working with electronics for 40 years and I may make myself look stupid here please ignore the fact the board looks like a dogs dinner now with broken pads because of removing the IC but I have found no GND to LCX374 Pin10 or LCX00D pin 7 and there should be. Where I have twice scratched an X into the solder mask there is NO GND. Those areas link to pin10 & pin 7 of those ICs the other tracks break the areas from the overall grounding all over the board.
Looking at a picture of 2.5d & 2.5e the tracks are different to the WPC connector and do not break the GND at least to the LCX00 chip. The track arrangement around pin10 of the LCX374 different also.
Absolutely correct. Fix it and don’t sell anymore !He has not commented on Pinside for over a month ok so he may be busy etc but looking at the stats he has been on Pinside most days. This is why I basically walked away. He was developing new things like triggers to LEDs etc which is a good idea but I would have thought there was a need to fix the underlying issues first.