After restarting, you need to ensure Windows is using the new driver. A. Windows Sound Settings

is officially marketed as a class-compliant device—meaning it can function with standard Windows drivers—achieving professional, low-latency performance in a Digital Audio Workstation (DAW) requires a more specialized approach. The Legacy Driver vs. ASIO4ALL

There is a common point of confusion regarding official Behringer UM2 drivers. The Official Driver (ASIO4ALL)