Having multiple logins on too many devices can lead to a failed Cash App payment. Therefore, consider avoiding multiple logins and remember to log out once you are done using the app. Leaving Cash App signed in on devices not only exposes you to online scams and fraud but can also flag you as a suspicious user on Cash App, resulting in failed Cash App transfers. Additionally, always ensure that your internet connection is working well. Even the smallest interruption or network issue with your internet can result in a failed Cash App transaction. So, always use a high-speed Wi-Fi connection while sending money on Cash App. If everything seems fine with your Cash App, internet, and account but you're still wondering what's preventing you from sending money, the chances are high that either you don’t have enough balance or you are exceeding the limit.