LipSurf not selecting one of three duolingo answers when I say their identifying number.

In attachment, I can’t figure out why in Duolingo and Lipsurf, I can’t just say one of the numbers in the selected answers and then say “click continue” to move on. When I say “one”, “two” or “three”, nothing happens to select an answer. I don’t see why I have to click these type of answers manually.