Request allowlist access for audio output in Gemini 2.5 Flash TTS (Vertex AI)

Hi Google team,

I am experimenting with an app for belgian ice hockey clubs. We don’t have enough volunteers to have a real announcer that announces events like (goals scored, assists given, penalty’s received, etc…). I already tried using the tts models via google ai studio and it worked like a charm. But it’s time critical and typing in the text is cumbersome. So I want to create a little application that syncs with our national ice hockey federation so the “text” that needs to be announced/spoken can be constructed instead of typed.

But now I receive the error: You are not allowlisted to request audio output.

Could you please add me to the allowlist?