Hi Alexander
Strange, I have a volvo EX40, so that should be exactly the same car when you look at charging.
I am very satisfied with my flow to only charge using surplus energy. That flow is fully based on managing the Amperage via the Amina S.
And its working flawless.
BUT I did not set any amperage on the volvo (set to 30A while the Amina will do max (3x) 16A but normally much less. Homey is in full comtrol. So I guess that is in line with the advice you got from Amina
You can check out and download my flow here