Thanks for the reply, I'll speed things up. One question, though. At first, when the pop quizzes showed up before a lesson, it only contained words from lessons I had already studied. But now it's showing words I've never seen before. I did visit a story lesson, but I didn't click on any words or marked it as studied.

When I checked my review plan, It only showed words from the lessons I studied. Where are this other words coming from?