order processing bugs

Hello. I got 4 questions/problems concerning order processing?

1.If I complete an order that means the user can start the purchased course. An email being send but is not possible to put {{course_url}} into it. But would be very helpful for the user where to start the course.

2. Still here {{order_url}} is wrong in the sent mail to the user. The username is mine in the url, i m the admin who is logged in, but instead my username should be the user’s username, because it is his her order not mine.

3. The user can start the course without pressing the “Enroll the course” button. Simply just watch the curriculum tab. But in this case with no progress bar, no lesson stat (x/y) and no “complete this lesson” button and without any statistics I guess. Why is this possible?

4. What is “trigger action of current order status” for in admin > orders > order actions?

thanks a lot!

The page I need help with: [log in to see the link]