Hi @MarkLattery ,
Thank you for posting on the Instructure Community!
As someone who's been using Free for Teacher for a few years now, I always recommend requiring your students to sign up themselves, instead of you sending invitation emails. This process always seems to work better. They can register for a new account on the free version by going to either canvas.instructure.com/login/canvas or k12.instructure.com/login/canvas (whichever one you registered for), and in the top-right hand corner of the login menu they will see a button that says Need a Canvas Account? Click here! They can then select the student option, and can enter their email, name and the join code for your course. The join code will need to be enabled via your course settings, it's located towards the bottom.
I hope this helps and that this alternative will be a solution for you! Always feel free to reach out with any additional questions or concerns, always happy to help you! Welcome, and enjoy using Canvas!
All the best,
Noah
