If your BoS is STEAM version check in STEAM > Settings > Controller > General Controller Settings > if "Generick Gamepad Support" is ticked, if yes this prevent joystick be regognized by games installed by STEAM.
I un-check all options - no gamepad's there.
If is not STEAM try rename the folder Input - inside game folder, when you open the game again will be created a new and the try map the commands/axes.