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.