Users appreciate the WordPress plugin for its effectiveness in facilitating freight calculations for Correios delivery methods in Brazil through WooCommerce. Many praise its ease of use, comprehensive functionality, and reliable performance, ensuring smooth handling of shipping logistics. Frequent updates and quick responses from the developer, Claudio Sanches, also receive commendations, enhancing user experience and trust in the plugin's reliability. However, some users report significant issues, including failures in freight calculation when certain features are enabled (like "Frete Grátis"), unresolved problems for products priced between 18 and 20 reais, and instances where the plugin ceases to function, indicating a need for more thorough and frequent updates.