You are using one of our online textbooks and you are having trouble opening the next chapter to continue your work.
If you are using Canvas, Blackboard, Moodle, or D2L, it might be that you have not yet unlocked the next chapter in Assignments. Try going to Assignments, Modules, or Content (find the location your instructor has included the textbook links) and selecting the chapter link you are trying to work on. That should unlock the chapter for your use.
