Hi Sikander!

OpenLearning provides the learning platform for organisations and individuals to teach their courses. If you have any platform or technical issues, you can always ask us! 

But for course-specific they would need to be answered by the course facilitator or administrator as they are responsible for running the course and the certificates. You could either comment within the course for the facilitator to reply, or you could send them a direct message on their profile page, if they have chat enabled.