Hi Rudi,
Thanks for you reply.
It happens only around 1 time per month, so not very often, but it is highly frustrating wanting to play a song and then you get kicked out and now you can't listen to music because all of your offline tracks are gone, and lets say you were busy driving somewhere.
We will uninstall the app and see if the issue persists, although this has been happening even through multiple updates have been installed first.
I also see it happening on the Windows 10 app, I tend to not have music downloaded on my computer so I don't loose songs, but I'm assuming if I did have music downloaded those would also be removed on my computer when I get logged out.