The date reported as the backup time is not in the format of my system (en-AU), i.e., dd/mm/yyyy.
Everywhere else in SQLBackupAndFTP is looks find but if you look at the “Backup time:” text below you can see it’s in mm/dd/yyyy.
12/10/2022 8:28:14 PM [Info] Deleting old backup of “MyDatabase”. Backup type: “Diff”. Backup time: “10/02/2022 14:02:09”. Files: ““MyDatabase202210021401diff.zip””.