Time travelling data leads to paradoxes. It’s unlikely to be possible. Think of entanglement as pair of boots. You’ve got one boot with you and unwrapped it on

Time travelling data leads to paradoxes. It’s unlikely to be possible. Think of entanglement as pair of boots. You’ve got one boot with you and unwrapped it on the mars. Voila, you know that one left on Earth is left one. This analogy is wrong but good enough to understand why entanglement does not help with communication.