I think the tones for 告訴 are swtiched around for simplified and traditional tracks. I’m currently doing the traditional track and the tones shown for 告訴 are 4-5 but in Taiwan it’s 4-4. When I write gao4su4 I get a “This is not a common pronounciation in Taiwan” notification.
The audio for 不客氣 is 4-4-4, when with tone sandhi the audio should be 2-4-4.
If I find more tone errors, should I mark them as Feedback or Bugs & Errors.
I agree 告訴 should be 4-4 for Traditional course. I’ll switch that to the primary pronunciation in the next update.
Also, yes, I noticed we don’t have 不客氣 added to our internal list of words that should have specially generated audio that respects tone sandhi. I will fix that today and you should hear the correct audio once that update goes out in the next couple hours.
Thanks again for the feedback!
In terms of where to report, I think either category works. 