You can add funds to your Spritz Card by clicking on "Fund with crypto" in the Spritz Card page. Pick which asset you'd like to off-ramp into your card and how much you'd like to add to it, then confirm the transaction on the blockchain! Your funds should appear shortly.
Once funds are on your Spritz Card we cannot return or transfer them, so you'll have to spend the funds in order to get them off the card!