Thanks to Guy for his lengthy fault-finding email, and to the rest of you for suggestions, it was all very useful and exceeded anything from Rivian support. By the way, my mobil charger definitely did NOT work with the GFI but worked great when connected to an indoor outlet. Others report...
Thanks -good to know. I must have done this without realizing. I was probably shown this when I got the buyer-briefing, but there was so much going on it didn't stick.
24 fraught hours later:
Discovered that there are some absolutely first-class support engineers if you go to the Rivian highway breakdown support line. -it was my concierge guy who was technically useless. :
My stress level was increased by the fact that the calls kept dropping when I went out...
I have installed a second charger unit at my vacation home in the mountains but it would appear that, in their wisdom, Rivian did not take this possibility into account and I can't pair my phone with this 2nd charger. I can't delete the app and setup a new account because then I might not be...