ACF Pro 5.9 comes with a duplicate row feature on its own. The “ACF Duplicate Repeater” plugin is no longer maintained.
Duplicate Repeater and Layout Fields in ACF Pro.
Supports all ACF Native fields.
Please head over to the source code on Github.
If you are looking for support on Non-ACF-Fields, there is some documentation in the wiki, that might come in handy.
Download & install the zip archive
The plugin package installer can be downloaded from the WP2E project tab called “code”.
1 – Select the version to download if this option is available otherwise the “latest” version of the main plugin will be used.
2 – After downloading the zip archive install the plugin package installer in you local environment and activate the script from the plugin list.
3 – Under the section “Plugins” of the admin dashboard you should see a new “Dependencies & Licenses” link. Follow the instructions from this panel to finalize the installation of the missing dependencies.
Tips: Use the WP2E panel to add/suggest new dependencies to the local installation. Press F5 in the list of dependencies if the changes are not displayed right away.