I’m experiencing the same problem, but instead of Kabyle, it’s with Spanish. I’ve done around 260+ recordings in a single session (probably on 1 hour or perhaps less). I assumed I got banned somehow (I started just today), as I cannot record in Spanish in 3 different browsers across 2 different web browsers, but still I’m able to record in other languages.
Edit: @sifaks In this other topic I found it might be because we run out of available sentences to read in our respective languages.