CoursePress Pro errow with course

Hello!
When i add some course, and i enroll it wont load or load wery slow ... it's wery bad for me and my coustomer, if i try pass test ( it wond save all answers ...) then i'cant reload site again.

Soryy 4 my ang... i still learning and i'm so tired ...

Photo of wiew http://i.imgur.com/0pilij8.png