Could not load track with Spotify

I have buy djay Pro in Windows App Store. I used my Spotify Premium Account to use your Spotify Integration. All my Playlist and Songs are show, but i cant play any Song. It ́s loading and after few secounds the Message “Could not load track”, Spotify session is not available. Please check your Internet connection is show.

I have already delete the App in my Spotify Account an have Re-Login on djay Pro App. But it dosen ́t work.

The only one i have buyed the software, wont work - worry! Please help.

No Support for this error?