Hi @PauliinaPunnone
Are you certain the student is not inactive?
What do you mean by "test student"? The student view of the course, which is called "test student" in the gradebook is not an actual student so I will not have analytics available for it. That error would show if you try to access the new analytics for the test student.
If the student is an actual student enrollment in the course that you call "test student" they should have Analytics populate after 24 hours they have been in the course.
If they were set to inactive or concluded at some point and changed back to active, the teacher would need to wait 24 hours before their analytic is pulled.
I hope this answers your questions. Thank you.