We had a problem with our subscription to CRM, and got downgraded to Free edition. After solving the problem, and going back to Pro Edition, we found that we cannot longer re-schedule task reminders. 

We don't even have the reminder option when creating a task from the Activities panel, the option only shows up when creating the task from the Contact or Account panel.

Please help as we have to create every task from scratch in order to not miss follow ups...

G Kato