The sound keeps disappearing ?
Thanks for raising this issue.
We are aware of audio issues on Google Chrome browser, which are seldom occurring.
We are working on fixing them.
For what it's worth, this also happens on Safari in MacOS. The first 20-30 sentences or so are fine, and then the sound disappears. It's probably the same issue.
@Raul-Liive I too have the same problem with sound disappearing after 20 to 30 sentences, using Safari on Mac OS Sierra. I like that the verb conjugations now appear below the sentence when you enter the wrong word. Very helpful.