When did your MuleSoft.U session end?
Note that course videos previously expired 3 months after the completion of your free, self-study course.
If you would like to be able to review them again, please enroll in the new MuleSoft.U Development Fundamentals course. Videos are ON DEMAND, FULL ACCESS.
In addition, if you've signed up multiple times for MuleSoft.U - it can take a day for all the modules to appear refreshed in your account.
If you've signed up to MuleSoft.U Fundamentals (Mule 4), they do not have any videos, it's an interactive html page.