Update :
After communicate via email with beelink, still no real solutions for this.
They ask me to send the unit and pay for all the shipping and repairs myself, which was too expensive for me since I was overseas.
So another dead end,,
Its really weird, because I have several mini pc older than beelink GTR7, and all USB4 works fine, but this unit USB4 does not work well, and the support service does not have a real solution for this problem, even though many GTR7 owners experience the same thing.
I am not buying this brand again.