Backup file removed from 1&1 host

Hi,

Over the course of a day, I created two full backups, and in each case, the backup files were eventually deleted on the server.

Settings had the files placed here:

wp-content/uploads/backup-guard

I was able to view the backup files while connected to my hosting provider (1&1), but then some time later (hour or two), the files were no longer there.

Only the backup files have been removed, the directory structure remains intact.

Thanks