Trouble to Authorizing Devices on AppleTV Sonoma 14.1.2

I just bought a new Mac Studio M2 Max and I am on the newest Sonoma 14.1.2. The AppleTV app seems buggy. Slow and sometimes freezes! I am trying to play a movie in my lib, it gave me a popup says I need to authorize this device before I can watch the movie. With the newest AppleTV interface, there is no more top menu. The only way I could get into my account settings is to click on my profile icon on the bottom left. It slowly launched the account management window. But then, it has nowhere let me to authorize my Mac Studio! Has anyone encountered the same problem? Any suggestion?