Just got to the end of a solve to get this board working, or at least the 5 units I have to hand, received recently
boards are from here
https://w.electrodragon.com/w/ESP_LED_Board_HDK
discussed here Discord
apart from having to get help to get a build at all, see
h t t p s ://github.com/Aircoookie/WLED/pull/2951
had to break link to post 
link limit is making this hard
and all boards actually have io10 jumpered to header out, not io2 as per schematic and wiki
so now it is working don’t want to lose the information for the next guy