You are correct in pointing out that the teachers functionalities are not currently available. This is temporary.

During the course of this school year, you will see these tools reappear gradually as part of the subscription.

Teachers can definitely use the new version of Studyo Go to invite individual students, and see their planners (which was not possible before). But there is currently no way to invite a complete class full at once.

In the meantime, you can ask students to invite you to their planners using the "Invite…" item in the profile menu. You can then use a sharing code on your end (still in the profile menu) and you will have the ability to switch planners in the top right hamburger menu.

Stay tuned for updates on improvements to teacher functionality!