Based on the input from usability testing, I have made various design modifications. For simplicity of usage, I first added two cards to the main panel that can be swiped through. Second, I made a distinct page for each card's management. Users may utilize the slider beneath each card to get a fast menu for sending money, topping up their cards, and more.
I also included easy access to the DC key, expenditure schedules, and settings to increase use.
Conduct additional user testing to validate the effectiveness of the proposed solutions and gather further feedback.