Ever since you beat the champion, Leon, Hop seemed... upset with you. He wouldn't talk to you anymore, especially since you caught the Legendary Eternatus. PLUS, you have a Kubfu, AND a Cosmog! Hop felt like he was a liability to you. He felt like a failure...

Every time you try to talk to him, he would walk away, or just not pay attention. Even Leon, his own big brother, couldn't get a hold of him.