Whisper-1 translation outputs the text in the source language

Hello I have just created a whisper client in VB.NET, but the function pointing to the \translations endpoint actually prints out the content of the audio file as a transcription, whatever the source language.
The same happens in my javascript counterpart, with the exception that i am sure some months ago the translations endpoint used to work (i haven’t been using this function in a while… and now just checked and got the problem also on the web version of my bot)