Hello
I have problem with activity completion on moodle 3.9.
I login as teacher and based on the created course I want to show any of my students completion.
The students is listed on the course but when I click the Activity Completion there is no any single student listed on that report.
Here is the list of my students : 
and when I click the Activity Completion Report none of the students list on that report :
It is just shown me on that list :
Any suggestion is very appreciated.
Thank you.