Is there a way to track charging sessions without an internet connection when the car is charged?

Hi there,

My car is parked in an area without an internet connection. I used Teslafi in the trial mode to see if I could use it to track my charging sessions as I use the tesla wall charger that doesn't have any charging reporting. Unfortunately the charging dashboard doesn't show any charging sessions at all (I only charged in a place without a internet connection). Is this how it works? Thanks!