Hello @glen_m and welcome to the forums!
I’ve taken a look at your order and it looks like you have the single phase version of the emonVs voltage sensor there?. There is a note on the shop page in the emonVs section “Please email us if you would like to buy a 3-phase capable voltage sensor in advance of the available firmware” but I cant find any reference on the shop order to suggest that it might be a 3 phase unit?
We would be happy to exchange the emonVs that you have there for a 3 phase unit. Could you send us an email at [email protected] and we can take a look at this for you.
The 3-phase firmware was only made available last week, so the firmware that you have on the unit at the moment is single phase as well. I’ve written a post here on how to configure, compile and upload the two 3 phase firmware examples that we have so far. You will need the 3 phase emonVs to make those work, but it might be worth getting the Arduino IDE environment setup and following the steps there as a starting point in advance of us sorting out the emonVs.