Hi
Frank Song did you happen to do what was mentioned previously and clear all your browser history, cookies, cache, then retry? Also, did you try on a different browser?
That being said, we haven't heard back from @Ryan You:854bab90#. Although he did log in yesterday and seemed to have been able to view courses, correct @Ryan You:854bab90#?
As I am not able to replicate the issue on our end.
7-day free course videos are and have been working properly.