The French male voice isn't finishing his sentences.
I'm currently working through the "Food" module, and the male voice repeatedly isn't finishing his sentences. Sometimes if I hit replay I can hear the whole thing. Sometimes I have to push the "slow" button for him to say every word.
On the smartphone or on a computer? Windows? Linux? Mac?
Which browser and version?
Have you tried with Firefox?
I have good results for my Portuguese courses with Firefox V52.9.0esr on Windows whereas it might also work with the latest Firefox Quantum version.
It may work or may not work as good with the very recent Google Chrome browser versions.