Expectations from my Home Charger - 2 questions

My charger was installed last week. It's a HomeFlex Level 2 EV Charger, Hardwired NACS Charging Station. Q1: Is there an easy way of making this inaccessible to everyone and anyone. I mean it's at the side of my house, but I travel and what's to stop someone hooking up to it? I am guessing maybe adjusting the schedule?
Q2: The run is about 6m from my electrical box. The current amperage allowance is 50A. The average charging over the the last few days is about 9 KW, is that what I should be expecting? This site says 7-19 for home, so how come I am on the lower end? What factors affect this?