How To Fix Cash App Payment Failed For Security Reason in 2025 (EASILY) Is your Cash App payment getting declined with the message “Payment failed for security reasons”? Don’t worry — this step-by-step guide will show you how to fix the issue quickly. We’ll walk you through the possible causes, from flagged transactions and account verification issues to network problems and outdated app versions. Learn what triggers Cash App’s security system and how to safely resolve the issue so your payment goes through. Whether you’re sending money, paying a vendor, or transferring to your bank this fix will help. #cashapp