Users appreciate the JWT login WordPress plugin for its robust functionality, ease of use, and excellent support from the developer, Nicu. It simplifies setting up secure authentication, particularly beneficial for mobile and third-party applications. Users find its interface intuitive, and many laud its ability to handle login, registration, and password management through the REST API smoothly. The plugin’s extensive features and configurability through the backend are also highlights. However, some users faced issues with documentation clarity and encountered bugs related to secret key creation and API requests. Despite these drawbacks, the developer's responsiveness and swift bug fixes receive high praise.