No Student Progress Shown in Microsoft Learn Plan

Hello,

I have created some Microsoft Learn plans and invite students, but when I go to Manage > Track Progress, the panel always shows 0 students. I expected to see a summary of their progress, but nothing appears. Students have used invitation link and access the plan and some of them have finished.

Additionally, when I try to download the CSV file, it also shows no data.

Is there a known issue with progress tracking, or am I missing a step? Any help would be greatly appreciated.

Thanks