way to Find out Ticket support engineers

Hello, I'm using Powerbi as a paid plan. There are many errors, so I would like to ask . I'd like to know the detailed route for your inquiry. https://support.fabric.microsoft.com/ko-KR/support I went in here and tried, I can't see the button to make a ticket like image 1. If you log in, you'll only be taken to https://app.fabric.microsoft.com/home .