Spotify Family with sony Music

[Batschsti]

I used Spotify with my Playstation 4 and just used it alone. Now i want to use my Spotify acoount with myBrother and we want to upgrade it to an family account. But i can´t find a way to upgrade the sony music spotify account to an family account. I already canceled spotify on my ps4 and logged in on the pc with my spotify data. I tried to upgrade my account on the website but they say that i use spotify with a partner but i dont want to use spotify with the partner anymore, just my account with spotify family