the game does not work, for xbox game pass ultimate pc

[WANDERSONXD]

I'm trying to access Call Of Duty III, via Xbox Ultimate and I can't, when the game starts the following message appears:

Iniciar Sessão

Você não está conectado a um perfil. você precisa estar conectado para jogar Call of Duty: Modern Warfare III.​

I've already linked my Xbox account when registering on the Call Of Duty website and in Battle, and I can't play at all!