This popped up for one of my students when he tried to get his shared link, and I'm not sure how to fix it. I went to Manage Students and do not see any options to enable sharing of advanced projects. Any ideas?
Try going to your dashboard and then click on progress for your section of students. At the top there should be a tab called "Manage Students". Click on the cog wheel at the top right and there is an option for sharing. I had a couple of students who needed to be changed for sharing so thanks for posting this!
Awesome! Thank you, Michelle, that did the trick.