Depending on your instance's configuration its possible this type of notification could appear in a couple of places:
2. jiveURL/inbox >> filter by notifications
However, if you are not seeing the approval in either of these places, I would suggest submitting a case in your customer group ( MyJive Secret Support Group Administration FAQ ) as a next step so that a member of our support team can assist with further investigations into your specific instance.
Thanks, Jesse. Will report the case.