Brilliant service and idea, bad app

Coursera per se is a very brilliant service, and the app could be wonderful. The problem is, it doesnt work well. I am able to play some courses, others make the app crash. Tried to uninstall and re-install, but the problem is still there. Fix it and it will be 4 or 5 stars

Fabio-68 about Coursera: Grow your career, v1.5.1