Garbage company
Garbage company, avoid!!!!

Opened the account without any problems and have had it for a long time and no issues. Out of nowhere, without explanation or advance notice they 'closed the account.

" In accordance with our terms and conditions, we have closed your account.

A check in the amount of $xxxx.xx was sent to your address on file.

Please securely destroy any N26 debit card(s) associated with this account, as they are no longer valid.

Please feel free to reply to this email if you have any further questions or concerns.

Kind regards,
N26 Banking Operations"

According to the 'terms and conditions' accounts are closed immediately under 'extraordinary' circumstances"
"There are several reasons why N26 may block or close an account. These reasons come from our decision as a business to act in line with our risk management policies, as well as our need to comply with relevant statutory obligations. In simple terms, this means that N26—as a bank—needs to act in line with laws that exist to combat illegal activities such as money laundering, financing terrorism, tax fraud, and abusive or fraudulent use of the account. In these cases, access to an N26 account may be restricted, or the account may be closed.

Other reasons why an account could be closed include: 

improper usage of the account, 
a serious breach of any of the Terms and Conditions, or
any behavior that goes against the general rules of conduct set between the customer and the bank."

But however none I didn't do any of that. In fact had been using the card and account very minimally. 

BOTTOM LINE - DO NOT ENTRUST OR RELY ON N26 AS A STABLE, RESPONSIBLE BANKING RELATIONSHIP.