Please create a temporary admin account for me using vinny [at] usestrict [dot] net so I can have a look at your settings.
Also, did you read the testing section of the documentation? It explains how to manually trigger the cron jobs, making testing much easier.
Please do make sure you have the latest version of the digests installed. I released 1.12.1 earlier tonight, with a few fixes and a rewrite of the forking code.