Mobile CRM not rolling tasks

Mobile CRM not rolling tasks

My tasks aren't showing on the home screen of the CRM Android app. I have overdue tasks and none of them show up today. They only show up on the one day they're due (ie two days ago and never show again. Making it easy to forget). They don't roll over if they're not completed. Shouldn't they show up on the home screen as long as they're not completed?!