Hi @Dj Leonidas !
I hope answer below helps solve your problem.
From Virtual DJ page :
How to Fix Deezer Not Working with Virtual DJ
The Deezer Virtual DJ integration allows users to stream music and create their own mixes. However, some users have reported issues with Deezer not working properly with Virtual DJ. This can be frustrating for DJs and music enthusiasts who rely on these platforms to create and share their music. Fortunately, there are several methods that can be used to fix it.
Check Your Internet Connection
Make sure you have a stable internet connection. If your internet is not stable, Deezer may not work properly.
Check Your Deezer Subscription
Ensure that your Deezer subscription is up to date and active. If it has expired or is inactive, you won't be able to link Deezer to Virtual DJ officially.
Use AudFree Deezer Music Downloader
As shown in Part 2, you can use this tool to download local Deezer songs in order to fix any Virtual DJ download errors with Deezer.
Download
Download
Check Virtual DJ Settings
Check that the Deezer plugin is properly installed and activated in the Virtual DJ settings. You can do this by going to Settings > Plugins > Deezer and making sure it is enabled.
Reinstall Virtual DJ
If none of the above methods work, you can try uninstalling and reinstalling Virtual DJ. This will help ensure that any issues with the software are resolved.