Erasing my progress?
I passed through certain rounds and have progressed onto the next, but when I log out and back in, some of the little yellow things are not filled in.. I am still able to pick up where I left off, but I don't know if I should go back and re-do the missing rounds?
What you're seeing is your word strength. If you see the bar getting less yellow then it means you should do some practice. Just click on the lesson and start practicing (you'll see the bar fill up as you practice).