Users appreciate the WordPress plugin for its excellent support and ease of use, particularly when integrating with Firestore/Firebase. The support team is praised for quick responses, willingness to get on calls, and providing effective solutions, even customizations. Users value its reliability for Firebase Authentication, as it's one of the few plugins available that work seamlessly. The plugin is also noted for saving users significant time in production. However, weaknesses include issues with certain functionalities, like Firebase attribute mapping and syncing WordPress and Firebase user data. Some users express concern over the plugin's encrypted code, limiting customization and potentially posing security risks. Refund policies are also critiqued as being inadequate.