Reload list will scan the backup folder for saved backups.
Restore will copy the items in the currently selected backup to the active Scripta folder. Restart the miner to let it use the restored settings.
Export ... will make a zipfile of the items in the currently selected backup and serve it as a download.
Import file... lets you upload a zip file and will add it to the list of backups. If it does not show up, try to reload the list.