I’m asked to login even though I already am
Try logging out and ( https://www.mbcourses.com/users/sign_in) and logging in again.
Try emptying your browser cache - here's a visual guide if needed:
http://www.refreshyourcache.com/en/home/
If that doesn’t work, try using another browser, such as Google’s free Chrome browser located here:
http://www.google.com/chrome/