If you have received a pop-up message that says you have the "Pornographic Virus", do not click any links or call any of the phone numbers listed because this is a scam. Have a look into Pornographic Virus Alert from Microsoft. A real person will be there to help you solve your issue quickly.
Your Cash Card is directly linked to your available Cash App balance, so anytime you add money to your account, you will also be able to access it on card. To know more, just have a look into How To Add Money To Cash App Card.