I started following Scott Adams after reading his book. He is right about it. Few hours back some tweet from him was mentioned as 'unavailable' . I didn't both

I started following Scott Adams after reading his book. He is right about it. Few hours back some tweet from him was mentioned as 'unavailable' . I didn't bother much. After reading above post, I went back to check again, its appearing on his home page and its not on my feed. I can see his tweets before and after tweets. But this one is missing!