Follow these 5 simple steps below to restore a backup from Plesk:
1. Login to the Plesk panel.
2. Click on 'Domains' on the left side of the pane and select the domain.
3. Click the 'websites and Domains' tab and select 'Backup Manager'.
4. From the list of backups from the Server Repository or Personal FTP Repository, select the existing backup that you wish to restore.
5. Select the items that you want to restore from backup and click the 'Restore' button to restore the data from backup.