Hi @fernandolawl,
Have you excluded your backup folder(s) in the Settings panel? Sounds like maybe your backups are getting bigger because you’re backing up your backups? You don’t want to do that. Be sure to exclude all backup folders including wp-content/uploads/backup-guard where BG backups are stored. I had that happen to me once with a different plugin, and it stopped backing up altogether when the backups got over 1G. It’s why I switched to BackupGuard