My answers to the questions on the audio have not been taken into account in my score!
When you tick the "I can't listen to the audio" checkbox in your daily lesson, your answers to questions related to the audio are NOT taken into account in the calculation of your score. This option exists so that users without speakers or headphones are not penalized. If you don't have any problems with the playback of the audio file, there's no need to check this box! Note that your daily score reflects only the number of questions answered correctly - the questions related to an audio you can't listen to will be marked incorrect in your daily score, but not taken into account in your general score.