If there are alerts you have missed, the Admin Alert Button (top righthand side of the portal) will be lit up RED and contain a # of missed alerts (A.) The most recent unread alerts will be displayed on the Admin Dashboard (B.).

Simply tap the red alert button (A.) to see a list of the alerts. If the button is white, then you have NO unread alerts.
To get rid of all of the alerts either click on them individually and then click Mark as Read (C.) or you can click on the Mark all as read button (D.)

This alert inbox itself will not impact your election management process or your election.