I have something similar. when I got the car, it would go up as expected while charging (even though I was on the 1000 miles free) but after a couple of charges, it has stayed at £0.00 and also some date in December last year, even though I've charged at the superchargers several times since. Now I still have 80 or so free miles to use and wonder if it will fix itself again once these are used up.Was this ever resolved I have the same issue my car always displays £0.00 when ever I use a SC. But it always displays the same date 29th of September 2021.