Unable to Select Words

I’m unable to select words and change them to yellow. It worked at first then quit working with multiple lessons. I closed my browser and went back in and that didn’t work. I also change from Google’s Chrome web browser to Microsft’s and still no luck. Any ideas? I also notice that I know this word is subdues, aka greyed out.

Sorry to hear that. Very strange, do you have that problem with any lesson you open?
If you still have the same issue please contact us on support(at)lingq.com as we will need some additional details from you to solve the problem. Thanks!