Rejected payment
Abnormal increase in payment or 3DS validation failures.
Use cases
Incidents that cost money without always taking the site down.
Rejected payments, emptied carts, blocked buttons, missing confirmations: CashFlowCanary follows the signals uptime does not see.
Typical incidents
Blocked checkout
Payment step inaccessible or form no longer submitting.
Missing confirmation
Order paid but confirmation page or signal missing.