I have a 3d party App, TezLab $30/yr, that parallels the 2016 bought, JuiceNet 40 Pro server metrics. Tesla does not have L1 or L2 charge tracking but we do get SuperCharger billing.Can't you do that with your phone or on your computer at home? That's what I do with my Kona when I am charging at a free remote charger (15 min walk from home). It communicates with the car, not the charger.
I admire the 15 minute walk to and from the car at the free charger. That is typically the duration of my daily dog walk. In contrast, my EVSE is adjacent to the back door, 15 seconds, which minimizes exposure to foul weather and other risks.
Bob Wilson