CRM Task reminder (e-mail) not working

CRM Task reminder (e-mail) not working

Hi,

Since the 14th of February the daily task reminders (sent to the task owner by mail) are not working anymore. 
Normally when a task is due, Zoho sends an e-mail to the task owner regarding the tasks which are due today.

Can someone please check if something is wrong?

Best Regards,

Thomas