I will preface this with please keep in mind that we would only support our software, if there is an issue with CRON on your server, that will need to be resolved by your hosting provider.
Are you receiving any System Log errors when executing?
We would need to look further into this for you, however the access details on file appear to be incorrect or missing. Could you please update these details by visiting your client area, selecting the relevant purchase, then clicking "Review/Update Access Information" under the "Stored Access Information" section.
We look forward to further assisting you.