No original sound

Hi guys, I have a problem with importing lessons,when they are already imported there is no original sound, but there is option to generate sound from auto speaker.Some lessons sometimes getting imported with original sound, but most of them are without it,so basically I can import only subtitles.
It works this way on app and on laptop.
Any ideas how can I fix it?

From where are you importing content? That’s normal, in most cases you will get subtitles/text imported only and then you can generate the audio.

I’m importing videos from Youtube,some of the lessons are getting imported with original sound but most of them only text.
I dont know why.
Any ideas?

We no longer import audio for YouTube videos. We had to stop due to breaking YouTube rules. From now on when importing YT content you will get a video and text (subtitles) only.