App hangs up on Listening Skills in Spanish 7

For the last two days (Feb. 5 & 6, 2018) the application has been freezing when I use listening skills. I do a few words, then at some point even with a correct answer, it will not go to the next exercise. I have to exit to the main page and go in again. If I go into Listening Skills again, it will hang again. All others (Learn new words, classic review, etc.) work fine.

Hi! This was reported here already: Course hangs