Reports Not Being Generated (The Hub / My Websites)

Hi there,
I set up reports on some of my client accounts in February. The report auto generated and so I set it up for the 1st of every month. None of the reports were generated on the 1st March so I went in and checked it, deleted the reports and re-set them up but I can't seem to get them to generate. Can you advise if this feature is working?
Many thanks