Your integration with Brightspace® requires you to open each assignment from Brightspace before you can open it from your home page in WebAssign.
Resolution
Open the assignment first from Brightspace.
Opening the assignment first from Brightspace allows the assignment score to sync to the correct Brightspace activity.
If doing so shows the same message again, notify your instructor.
A specific error in setting up the integration between WebAssign and Brightspace can cause this problem. Your instructor can fix this by following instructions in the instructor help.