Sorry, just getting back to this. Consensus seems to be that if you switch your Mando's power off, settings aren't saved / re-applied the next day. At least, it seems that way to me.
I am curious about your statement about "incompatible" power source - because I'm always having to reconnect, and even though I pick "automatic reconnect", I always have to re-select the Mando when I load the app. Mind you, I load the app like once every couple of months now for special occasions, rather than trying to have it active for everyday, because it seems to lose its settings overnight.
I think I picked a module in the middle of the right side of the fuse panel that was empty but labelled 10 Amp.
It definitely works, as in, I can notice that if I pick my "75-80% stiff" setting (for track), it changes the suspension for sure. But, I don't think it stays overnight, even though I have it on switched power, and it's always there when I try to reconnect, but it's almost always a manual re-connect, and I have to pick it from a list of bluetooth connections.
Does it matter whether or not I keep the App open in my phone after setting it? I'm on Android.
Edit: Note - I have a pretty early ECS10, when they were still being imported from Korea and I ordered off ebay. Is it possible you have a later revision / BIOS version?