Apple TV app - Family sharing problem

Hi,

I must be missing something, but I can't figure out, how to use family sharing in the TV app in Apple TV 4K. We have Family Sharing since it was released and it works great (Apple music, shared iCloud space, iTunes movies, ...), however, I cannot view the family movie content in TV app.

When I browse my movie library in iTunes (on Apple TV), I can see Family sharing -> members of family and when I choose any of them I can see their movie library and can play them. However in TV app I don't see "Family sharing". But when I search for a movie, which somebody else purchased, I can play it. So it works somehow. I just can't view their libraries as in iTunes.

I've tried to follow this link:

https://support.apple.com/guide/tvapp/family-sharing-atvbb056462b/web

however not successfully.

I just don't see "Family Sharing" as it is on the first picture

https://support.apple.com/guide/tvapp/library-atvb477f6302/1.0/web/1.0

What am I doing wrong?

Thanks,

Jakub