Quasi Non-existent support
Well, what can I say. N26 messed up by not sending me my new card in time, after that they couldn't accept that this was not my fault I had the choice between paying 20€ for 3-day-delivery or waiting 2 weeks thus not being able to pay for anything for at least 9 days since my old card would be expired by then. The support told me that my current card would immediately be blocked, but the way it was worded that seemed to only apply to the express shipping, therefore I opted for standard shipping. As you can probably imagine they blocked my current card immediately and now I have no way to pay for anything in the (at least) next two weeks and monthly payments via credit card don't work either obviously. To summarize: an alright bank so long as you never have a problem, if you got one: pray to God it somehow solves itself because N26 support won't help you at all.