The original title is about WooCommerce checkout monitoring and how to catch a dead checkout before a client calls.

Short summary

Uptime monitoring cannot detect a broken WooCommerce checkout — the homepage loads fine while orders silently fail. The article outlines five ways a store breaks while returning 200 OK, including gateways stuck in sandbox mode and broken checkout templates. It provides concrete monitoring strategies: baseline-normalized failed-order thresholds, gateway mode checks via allowlists, and daily active service orders that walk the full checkout pipeline and report where failures occur.

• •Uptime checks miss checkout failures — the homepage stays up while the store breaks
• •Five common silent failures include gateway sandbox mode and broken checkout templates
• •Active monitoring uses baseline-normalized thresholds and daily service orders through the real API

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