Terrible app, very difficult to add money to and poor quality of customer support. It will not accept any credit card payment nor (despite touting it as their preferred payment channel) Google Pay if the Google Pay account is linked to a credit card. It also will not accept debit cards from many countries and, even among the countries it seemingly will accept from, will refuse to accept some debit cards for no known reason. Arranging bank transfers is possible (from some banks in some countries) but slow process. Even just to get card express mailed to you upon first opening account, they will not let you pay by credit card and are unresponsive/unhelpful about finding solutions.