WooCommerce currency or multi-currency issue: why are prices or payment methods inconsistent?
API, webhook, and integration issues in WooCommerce usually affect external apps, payment callbacks, or automation layers that rely on stable authentication and event delivery. Merchants should avoid treating these as ordinary checkout issues until the integration path is tested directly.
Integrations break because of key changes, authentication failures, security plugins, webhook delivery problems, or update-related compatibility issues. The store may still appear normal on the frontend while the automation layer fails silently in the background.
Collect logs, confirm the exact response or webhook failure, and then run the official troubleshooting workflow. If the break started after an update, note the plugin and version changes so support can quickly identify whether the issue is compatibility or configuration.
Official URLs to review: