Tourneo Custom 2024 Sync4 Entertainment

Hello everybody, I’ve been running my TC since this week and I’m just fuchsing in. Alexa is activated just like Premium Connectivity, but I can’t manage streaming videos. Does anyone have a tip here on what I need to do to get this going? Another question: Is there an overview which vehicle functions can be controlled with Alexa? Temperature and air conditioning go but the seat heating doesn’t know them for example…