Inefficient problem solving
Inefficient problem solving by the support center. Although they answer fast and are always kind via chat, it seems that the security procedures are almost made to exhaust the client. I had several issues with my account where I made a couple of wrong attempts to type in my pin code, or when I had to unpair my device due to device upgrade, and more instances when my account got blocked. I would normally appreciate the security measures taken to protect my account however when I am ready to answer all security questions and my account is still not re-opened after the 5th person I speak with on the support team, and after following ALL the instructions, then something is clearly wrong!
With N26 everything is done online, hence some technology like face recognition would be useful, rather than forcing an ATM withdrawal multiple times just to identify me as my own account owner, but then still not being able to re-open my account. Probably the most frustrating service I have ever encountered, and what makes it unbearable is that my own finances are then being frozen. 
Recommended to stay away if you don't actually have the time to spend hours on the chat for basic requests.