I cannot select the DDJ-WeGO4 ASIO driver in the preferences window of TRAKTOR PRO 2.

If you turn on the power of DDJ-WeGO4 after launching TRAKTOR PRO 2, DDJ-WeGO4 ASIO driver may not be recognized. If DDJ-WeGO4 ASIO driver is not recognized, shut down TRAKOR PRO 2 and turn off the power of DDJ-WeGO4. Then, turn on the power again and after waiting until the startup illumination is finished, launch TRAKTOR PRO 2 again.