I spoke with a service manager today and got good (bad, really) answers about the walk-away lock feature. The multi-beep issue has something to do with the D-bar (??) which essentially the part of the frame of the car near the drivers seatbelt. If the fob passes that point, and you close the doors, the car will multi-beep. Hence - if your FOB is in your left pocket as you exit, you're probably not going to experience an issue. My purse, however, swings over my right shoulder and routinely passes that dead zone. #itsamansworld Unfortunately, it's a design that Honda doesn't view as a flaw or defect.
On another note, he seems to think the walk-away lock feature may be tied to our repeated failures with our 32A EVSE Level 2. I don't buy it, but I'll play the game until Honda admits there's something wrong with our car.
This seems like dealer talk (aka BS). I always have the key in my right pocket and it locks fine irrespective of any D-bar crossing as I walk away. The only time it does not lock is when I open the boot and have to take stuff out.
As for your charging problem, you most likely need the service update SB 18-097.
It appears that the stock car is very sensitive to voltage/power fluctuations from the EVSE.