This number cannot be use to Activate Cash App Card application. Following a few simple steps will activate your card. First you should open the Cash app on your device. Then click the "Payment Card" icon. Then select the option to activate your cash application card. Therefore, use your mobile phone's camera to scan the QR code. Once the card is complete, it will be ready for use. However, you need to visit the website for more information. https://www.experts-support.com/blog/how-to-activate-cash-app-card