Hi @jurekzawilski, I noticed that you subscribed to our Deezer Premium plan via Apple.
To change your Premium plan to a Family plan, you need to cancel your Premium subscription, and wait for your Deezer account to switch to Deezer Free and only then will you be able to subscribe to the Family plan.

@jurekzawilski @Leonídia.Deezer 

Addition:
Booked within the app, the subscriptions are always (!) more expensive than normal, since Google and Apple still want service fees.
It is advisable to generally book the subscription via browser at deezer.com.

Thank me later.

Thanks. Will try.