Spotify/HD Songs will not load

Over the last 3 months i have purchased the the Numark DJ2GO2 to work with DJPro2 and I have been having issues with the tracks to load on to the Windows 10 App it doesn’t matter if it is a track on my HD or through Spotify. This has seemed to happened since the last update.
I brought this specifically for Spotify and Genres of music that we can not simply get in the UK and i am now in desperate for this to work

You mention Djay pro 2 (which only exist for Mac). You mean Djay pro for windows, right?
Are you sure you have the latest version: 1.0.27578.0