I just cannot Grasp what the lady is saying even at snail pace
You need to work on your listening and pronunciation skills, unless the audio has been cut off or any other problems like that.
You can disable listening exercises in the settings.
Lots of people complain about this at first. At the beginning it will take some time. Just keep trying and you will be fine. It can help to not look at the screen until you have heard and really tried to understand each sentence as spoken. Then look at the sentence and see how you did.