This is a quick example of how to restore an example directory:
/var/www on your server.
Create a file backup for
/var/www (as an example).
Go to your backup page, under the "Backup History" section click the little "i" on the right, then click "Raw Download Link" and copy the output.
On your server, run the following command, replace the raw download link you obtained in the previous step:
wget "PasteTheRawDownloadLinkHereBetweenTheQuotes" -O "backup.tar.gz"
Now that you downloaded the backup on your server, restore it as shown below by running:
tar --overwrite -xvf backup.tar.gz --directory / var/www
Note: this will overwrite your
/var/www directory by the one in the backup archive. It is a good practice to extract the backup in a temp folder first and inspect it.
If you need any help in any of these steps, let us know and we can help you with the restore.