Users appreciate the Meks shortcodes WordPress plugin for its ease of use, variety of formatting options, and the fact that it's free. Many find it works smoothly and enhances their pages effectively. However, some users encounter issues such as shortcodes not displaying in certain contexts (e.g., blocks or Contact Form 7), and a lack of support response, which makes it difficult to troubleshoot these problems. Additionally, there's a minor usability concern that the shortcode button doesn't always appear in the visual editor for blog posts, and some users wish for more customization options like an "extra small" button size.