What list of things would I do if Microsoft Classroom is not allowing me to assign grades to student submissions?

1. Ensure the permitted Microsoft Classroom accounts have the correct set of grading permissions and roles.
2. Verify that any uploaded marksheet files are in the correct format.
3. Check that the names of the students in the uploaded marksheets match the usernames of the respective Microsoft Classroom accounts.
4. Make sure all due dates for assignments and assessments have passed.
5. Refresh the web page to ensure that any changes to assignments, grades, or submission folders are synced.