Learn why did the Cash app transfer failed for my protection? from Megan White's blog

The Cash application may fail in the transaction to protect you from fraud. The Cash app monitors your account, and if suspicious activity occurs, the Cash App transfer failed or the transaction fails to protect you. However, this is to save you from any scams and money losses. Although, to avoid the risk of canceled payments, you must Confirm and verify the recipient's details, such as phone number or $ Cashtag before making payments. Connect debit or credit cards only on your behalf. Use the Cash app more often to maintain a healthy transaction history. Do business with people you know and / or reputable companies.