Just taking a look at this PCB now, can I suggest adding labeling to indicate which way the power cable connects? Here’s a footprint I use if it helps https://github.com/holmesrichards/kicadfootprints/blob/master/Power_Header.kicad_mod
(Also there’s the business of the jack footprint which has the tip labeled S, so the schematic has the output going to the jack sleeve, which it doesn’t. My jack footprint: https://github.com/holmesrichards/kicadfootprints/blob/master/Jack_6.35mm_PJ_629HAN.kicad_mod .)
