Hi Elise,
I know it’s a while since you posted this, but I’m having exactly the same problem with my new install, and, having scoured the net, happened upon your post!
Did you manage to sort it in the end? There doesn’t seem to be much out there for faultfinding this problem. I’ve ascertained that there is power going to the first plug, but there’s nothing on the terminal for the red (I’m assuming live) cable that goes from that first plug and then down to the controller.
Hoping that you got yours all runnning without too much further hassle, and can hopefully help me with the same issue please?
Thanks!