Sorry to hear that it did not work.
Do you have the Windows Mixed Reality for Steam VR installed?
https://store.steampowered.com/app/719950/Windows_Mixed_Reality_for_SteamVR/
If not, you should install and try again. Try running the 4.37 BMS shortcut as an Administrator.
This is also important:
Be sure you add this to the end of the target line. One space after the last quotation and then this: --force_steam_VR.
The complete target line should end up looking like this:
“[DRIVE LETTER]:\Falcon BMS 4.37\Launcher\FalconBMS_Alternative_Launcher.exe” --force_steam_VR