I’m afraid no workaround is available ,. 

I believe there is a better approach with a 100% success rate than downloading the Deezer app to your iPod touch 6th generation! First, download your Deezer music in MP3, AAC, or other common formats to your computer, and then transfer them to your iPod touch 6th generation. This works fine as long as your iPod has enough storage space! If you don't know how to do it, you can refer to this tutorial: Play Deezer Music on MP3 Players