Hi Arunkumar,

If you have watched 90% of the lecture without fast forwarding, this may mean that during your session, your internet may have experienced issues so Teachable was not able to track progress. 

Usually, a browser refresh, clearing browser cache or changing the browser will solve the issue.

Feel free to email at ace@aviatrix.com if nothing worked.

Does this applicable to test re-take. I have to re-take a session test and since then, can not proceed.