automated reports are not working

Double check sugarcrm.log. Hopefully you will see some clue in there.

Regards

Have you checked if the Scheduler "Run Report Generation Scheduled Task" is active and configured correctly?

Also take a look here for more troubleshooting input for scheduled reports:

https://support.sugarcrm.com/Knowledge_Base/Schedulers/Troubleshooting_Scheduled_Reports/ 

Bests

Björn Canales Pfisterer

Technical Support Manager

provalida GmbH

Where is the system hosted? At SugarCRM? In your own evironment? In a partner cloud?

Do you have acces to the output of the cron job?