If you see an exclamation point in your directory, it means that the parent’s email address is not valid. Hovering your mouse on the email address will provide you with the reason why the contact is invalid.
To correct this, please follow these steps.
1.Click “Directory” then click “Edit Directory”
2. Click the “Delete” button below the invalid contact.
3. Click the “Confirm” button.
4. Click the “+” key to add the correct email address
5. Type in the correct email address then click on the “Add” button.
Check this vide out showing you the Directory tab.