In English, how do you say...?
The app has a scanner feature that can be used for getting authentication of the payment done or it can be used for reading the code on Cash card for activating it. But if the scanner is malfunctioning, then you can try cleaning it. However, if this hack doesn’t work, then get to Cash App customer service for help and assistance. https://www.customercare-email.net/cash-app-customer-service-phone-number/