To receive email notifications, certain boxes need to be checked in GameOfficials under "My Info". Make sure that under “Cell / Email Notices” that “One Per Game - One email will be sent for each new game assignment “ is checked. Then, further down under “Group Emails” the “Subscribe - Yes, I want to receive group emails from this Group.” also needs to be checked. Again both items need to be checked in order to receive notifications of game assignments.
Information on how to do this can also be found in GameOfficials under the “Assignment System Identities”. Click on the “View” for “Change Setting to Receive emails and Assignments”. You should also look at some of the other pertinent messages that are listed here.