The present can't be different from the past or the future to think that this present is different from the other present would be a fundamental disjoint of reality there are a sequence of present moments. Therefore the sequence happens in an order so if we're in the present now is logically inconceivable that the what we call the future the next and the sequence could have happened already therefore that invalidates the block universe. It also seems to invalidate the multiverse since the precedingnlogical postulate can easily explain what we perceive to be a branching off of possibilities much more parsimoniously than the convolutedness of these imagined other realities