My students are in two different sections. a 17-18 one, and an 18-19 one. I have made the 18-19 course visible and unlocked to them, but they are not able to complete any assignments/surveys.
@williamsd I suggest you write in to support@code.org with your issue and we’ll be able to get on top of it quickly. That system will make it easier for us to see some of your account information (but please include it in your message regardless) so that we can dig into the problem.