Impossible to open an account for Ukrainians
It's impossible to open a bank account for Ukrainians, even if I live in Germany and have a valid German ID card with UNLIMITED residence permission to live and work. Which is really strange and stupid. German bank is not able to verify and accept German ID cards ))) By the way, it's possible in another german banks, so...
UPDATED:
Well, I've read the answer from support N26, and I understand their legal restrictions, but anyway I have one simple question. Why it's possible in many other german banks? Many of them are online-banks too, but they don't have such strange limitations. At least it always possible to confirm identity with Postident. 
So, as I said before, I understand your position, but can't recommend your bank to anyone, because of it. The only solution is to use another german banks, without such difficulties, fortunately there are a lot of them.