Bb Grader the iOS app for instructors that facilitated grading is reaching it end of life and will be unsupported as of March 29, 2019. The good news is that Blackboard has integrated the grading functionality into the Bb Instructor app.
While Bb Grader may still function after March 29th, any problems encountered will not be addressed by Blackboard support. If you are using Bb Grader, please install Bb Instructor and begin using that application for your grading.