OBS not picking up phono on my DDJ-1000 (Windows)

Finally got round to setting all up after hours of trying to get a signal to work. Finally got it working with Rekordbox via using a soundcard. Lovely but now OBS won't pick up my 1210s. Pulling my hair out to why. Can only find information on mac users where they have to install a 3rd party software but no information on window users. Please help