After you complete the Cash App login you can do the Cash App card activation with or without QR code. If want to know how to activate Cash App card
without QR following are the steps that you need to take:
Install the Cash App.
Go on the home screen and click the Cash Card icon
After this select the "Activate Cash Card"
Then click on the "Missing QR code" button and select "Use CVV Instead."
Click "Missing QR code" to enter the CVV code on your Cash Card. Taylor Lyles/Business Insider
Enter the CVV code and expiration date located on your new Cash Card. Once you enter this information, your activate Cash App card without card is complete.