Metrics in Training Service Partner dashboard still shows not started

our TSP was on-boarded some months before, and it has now been more than some months since we started delivering training courses. We received the welcome email, completed all required formalities, and have delivered some trainings, and learners redeemed the achievement codes, and completed the surveys in MTM. All of these sessions appear correctly in, MTM surveys, and related dashboards.

However, in Partner Center it still shows “Not Started.”

Could you guys please review this and help us understand why the status has not updated?

Thank you,