Cannot see next lesson content

Yesterday I was working through one of the courses, but when I went to re-open it today I do not see the window that tells you the steps for each lesson. I can’t seem to see how to open it, I was wondering if there was a way to through a button or hotkey, or if it was bugged? Thanks!

EDIT: I am talking about the CodeRoad window that lets you know what to do to reach the next step.

Ended up doing CMD + SHIFT + P, on mac, to run CodePen and reopen the window.