Hi - sorry to snipe this thread, but having the same issue with my AppleTV4K and the skip1s blinking the led on the front of the ATV, but no actions being taken. I do not know how to/where to import the json, but have the remote, and the USB both plugged into PC. I also have been using a Harmony1 with this setup for years and it's finally kicking the bucket, so moving to this slick new universal! Attaching my config file here.
Office.skip