Hey there @Koby_,
Thanks for posting and welcome to the community.
It sounds like you have two accounts, one on regular Premium and one on Premium for Family.
Keep in mind it's possible to create multiple Spotify accounts, each with their own login details, saved music, and subscription. If your family members are all your plan and have Premium features as you say, we'd suggest checking this guide on how to find other accounts.
Let us know how this goes!
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