I ghosted as you and did not find any specific issue in your profile. Your Pega academy news section looks updated and also course progress also looks fine to me.
Plese note that, if you are revisiting any of the already completed lessons then last progress will not be updated. So the last progress will be updated in following events: Completing an incomplete lesson (which is not already marked completed), resetting the Quizzes, or taking the course survey.
Hope this helps and let me know if you have any other specifc questions.