WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture...
If a payment, delivery or invoicing integration stops working, first check the error message and the external service’s status. Confirm that the API address is correct, your credentials are valid and you are using the right environment: test or production.
Review the application logs for DNS errors, TLS certificate problems, connection timeouts or rejected requests. Check the service documentation to see whether the server’s IP address needs to be authorised, and verify that your hosting environment allows the required connection. Do not disable certificate verification to force a connection. When asking for help, share the error time and relevant message without including passwords, API keys or personal data.