It sounds like you did not get enough information when choosing the car and the lease company did the poorest hand over when they delivered the car by not explaining how things like charging the car would work.
Moving from many years of driving ICE cars to an EV is a strange new World of new terms (none of which are standard between manufactures).
You may also have some faults with the car which the lease company should fix.
EV's more than other vehicles are lots of computers all talking to each other to make things work and sometimes you will see glitches.
For example, the error you are seeing with the SOS system might be due to a poor mobile phone signal as this is what that system uses from a SIM built into the car. If there is no signal when the system boots up or checks for one then it will display an error that can be cleared once mobile signal is detected again
There is a YouTube Channel called JerryPan and cars with over 10 video manuals explaining all sorts of things about the car and you might find this helps you.
Jerry Pan and CARS