Did you edit emonhub.conf with the changes that are spelled out at the top of the sketch, part of the changes I did for you? Access it via your web browser and emonCMS.
It seems I forgot to mention that is needed to be done as well. Sorry.
This
[[15]]
nodename = emontx3cm15
[[[rx]]]
names = MSG, Vrms, P1, P2, P3, P4, E1, E2, E3, E4, T1, T2, T3, T4, T5, T6, pulse
datacodes = L,h,h,h,h,h,l,l,l,l,h,h,h,h,h,h,L
scales = 1,0.01,1,1,1,1,1,1,1,1,0.01,0.01,0.01,0.01,0.01,0.01,1
units = n,V,W,W,W,W,Wh,Wh,Wh,Wh,C,C,C,C,C,C,p
whitening = 1