So out of NOWHERE some random song started playing on my spotify. I stopped it. It continued playing. Suddenly I see that a new device is logged in named "PS4-239". So I changed password and after that I made "log off all" so all devices would log out of my account. Which succeeded for my computer and my smartphone.
But this mysterious PS4 keeps logged in. wth is this?
Thanks for reaching out to the Community about this.
In case you still experience the same after logging out of all devices and changing your password, we suggest you head to this help page. Here you'll find useful tips on how to secure your account in case of unauthorized access.
Additional info on how to protect your Spotify account can be found here.