If your students are reporting that they cannot write in an assignment, it may have been set up to be a "review only" assignment. If this is the case students will see the following:
If this was done by accident, teachers can unlock writing by following these steps to edit the assignment:
1. Find the assignment in your 'My Assignments' tab and click on the assignment.
2. Next, click on 'Edit'.
3. Scroll down to select the number of prompts students will respond to and choose an option greater than "No prompts." Your assignment will auto-save.
4. Once you've made changes have students go back to their Writable dashboard and re-open the assignment.