Hey @raftaar1191 sorry but this was a long time ago.
I probably tried to find a different plugin or a different way to import the backup.
You may try to now to upload the backup file into the All-in-One folder inside the /wp-content/uploads folder. They have made possible to paste a file there and import directly from the “Backups” menu in All-in-One.
But if I’m not mistaken, you need to buy a copy of the plugin in order to apply backups back to the site from the interface.