Users appreciate the Duplicator plugin for its ease of use, reliability, and efficiency in migrating and backing up WordPress sites. Many highlight how the tool simplifies processes that were once manual and tedious, making it quick and straightforward to move sites, including changing domains and servers. The support team receives commendations for their responsiveness and helpfulness. However, a few drawbacks are noted. Some users encountered issues with forced advertising in the plugin, and others were frustrated by features in the free version being limited, requiring a purchase of the pro version for full functionality. Additionally, difficulties with the backup and restore processes and automatic renewals also drew some criticism.