Waiting for phone to connect

[Mogens]

Hi all.
Anyone who has this problem solved?
My Xiaomi mi9 lite won't connect Sygic Car Navigation via USB to Ford Sync 3 screen. Can see the Sygic app icon, but when pressed the "car" says: waiting for phone to connect!!!
Phone have newest updates.
Android Auto works flawlessly.
Developer mode and usb debugging are enabled.
Anybody??????

Kindest regards Mogens