Since the inception of the Cash App mobile application, a lot of things have changed. But, the process of Cash App login has not changed. In order to get access to the Cash App wallet, users still need to receive and enter the secret Cash App login code. Without the code, one can't sign in to his Cash App account. If due to any whatsoever reasons you are unable to login to your Cash App account, you can contact Cash App customer service and get assistance.