Problem with transcript API

Let’s take this video (french podcast)
https://www.youtube.com/watch?v=TJ2vvygql48

When asking for “native” caption in “Auto“ it works well dans say —> that “en“ lang is available, but when asking for “en“ then it doesn’t work.
Another information is that the doc says when preferred language is not available it takes the default one, which is not the case.

https://docs.supadata.ai/get-transcript?_gl=1*1u7qxxi*_gcl_au*MTc1MTE5ODAyNC4xNzY5MjY3MjI5LjE3MDE2NTAxNzkuMTc2OTI2NzI1OC4xNzY5MjY3NDcz#languages

You can try it in the playground, or using code, same result.