We faced a problem, which cannot be fixed without expert help. Some (not all, but many) users cannot upload files in a set of courses. Users see the info-message something like "You don't have access rights to this repository" (hope I translated it correct from Russian)
We don't have an idea, what this repository is and why our students don't have access rights. Earlier all files were uploaded without problems. Could you help us with this problem, please?