Notions to ponder.
There is no Multiverse, only our Universe exists. In this case, all time exists. The past, present, and future, are only constructs of our individual consciousnesses trucking on down the lane much like watching a movie at the theater. The film exists in its entirety but we perceive only moments. In this possible reality it may be possible for us to perceive the "past and future" but we have no more effect on it than we do the "present".
There is a Multiverse, possibly infinite. In this reality, our Universe (with infinite permutations) would exist in every instant, always. It might be possible to sense those other verses and possibly even transfer our consciousnesses between. Remember Quantum Entanglement? Everything connected.That could look like time travel though the free will question remains.
Maybe rich people in the future want to experience poorness?