We have recently discovered an issue with the Bookmarks feature in Content. Instructors have reported that bookmarking certain topics can cause them to lose access to their course Content altogether. We are currently working with Desire2Learn to determine the cause of the issue and correct it. In the meantime, we have temporarily disabled the Bookmarks feature in Content until a working solution has been developed and deployed.
We apologize for the inconvenience, and thank you for your patience.