How to fix Codevz plus plugin is not installed?

If you were unable to install the Codevz Plus plugin, you can go to the WordPress Dashboard > Xtra > Install Plugins, where you will see the install button. You can install and activate the plugin from there. If the plugin was installed incompletely, you can remove it via FTP and reinstall it from the Xtra menu.

Additionally, you can submit a support ticket to the theme support team, and they will send you the download link for the files, so you can manually install the plugin.