keeps asking for "xbox game pass" for seasons

Howdy all, 

New to this I have not played FC is a long time got FC26 on my Xbox purchased full game via MS Store.

From the Menu If I select Seasons it has "Co-op or Solo" in the description but starts up a "Choose the plan that's right for you" windows asking me to sign up "Xbox Game Pass"?

how do I stop this from happening so I can play a solo season or couch co-op games with friends?

Thanks