Second Quiz Grades Hidden

Some students alerted me that they couldn't see their grades on the second quiz in the Moodle Gradebook.  So I checked and sure enough, those grades are hidden.  I then spent about a half hour trying to figure out how to unhide those grades, but I couldn't do it.  So I sent a message to tech support (see below).  I apologize for the inconvenience.  I hope the issue is rectified soon.