I see a lot of people saying AAWireless works perfectly with their ev6, I haven't had as much luck.
I have had a unit in my 2018 accord since the unit first launched, I ordered my wife one for the ev6 but I could not get it to work. I needed up having to enable USB passthrough or something like that in the settings and then did the start/stop option with the KIA Bluetooth connection. Seems to work better now but not as well as it does in my Honda.