Some models of Wii Remote don’t pair properly when using Driver4VR. In such case please use Dolphin emulator and launch retail Wii game or channel in dolphin and use “hybrid” Wii Remotes in the controller settings, pair them with 1 and 2 as you normally would. After that, they should be detected by Driver4VR.
Please report your model of controllers so it can be added to Driver4VR.