On the initial account configuration form (android app) there are two lines for postal address. Both mandatory, which can be confusing at least in some countries. Because it concerns successful delivery of the prepaid card, I think it should be shown by example how exactly it will be printed on the envelope to ensure the delivery or one of the lines should be optional.
I was able to edit my profile later and remove the second line while leaving the first line like:
Street_Name building_nr m flat_nr
and I’m not that sure if my card will find it’s way, because the usual way for polish address would be:
ul. Street_Name building_nr/flat_nr
but the field won’t allow slash ( / ) nor dot ( . )