Finding deleted reminders

Accidentally marked as completed, I presume.

Mark a reminder as not completed

1. In Reminders on iCloud.com, select the list that contains the reminder.
2. If you do not see the reminder you want to mark as not completed, see View completed reminders.
3. Click the circle to the left of the reminder to deselect it.
4. If you are using upgraded reminders, note the following:

• • If you mark a reminder with subtasks as not completed, all the subtasks are also marked as not completed.
  • If a reminder is marked as completed and you mark a subtask as not completed, you need to view completed reminders to see the subtask.

View completed reminders

Do one of the following:

• If you are using upgraded reminders, select the list that contains the completed reminder. Click  to the right of the list name, then choose Show Completed.
• Completed reminders appear below active reminders.
• If you are not using upgraded reminders, select the list that contains the completed reminder. Click [number] Completed above the reminder list to see the completed reminders.