I used a multimeter to measure the RGB LED labeled '1 4' on the AK Board 0.5.1 11 silkscreen and found that its second pin is connected to the board's GND. After checking the Gerber files, I confirmed this connection is by design. This indicates a common-cathode RGB LED is used on the board. However, the component linked in our BOM list is a common-anode type (https://www.digikey.com/en/products/detail/kingbright/WP154A4SEJ3VBDZGC-CA/7597097). I suspect there might be a mismatch?