Snapshot automated backups not running.

I have the Snapshot plugin set to automatically backup everyday at 3am, but it is not running.... yesterday it said the next scan was scheduled to take place a week ago (so... in the past)... so i reset it, and it was scheduled to go off again last night, yet it still did not trigger.

The last automated scan took place over a week ago.

Manual scans seem to work... but i'm relying on this to automate.